Materiały źródłowe

• #1 Thalassemia – Diagnosis | NHLBI, NIH

  https://www.nhlbi.nih.gov/health/thalassemia/diagnosis

  The ways that a healthcare provider diagnoses thalassemia depends on the type of thalassemia you have. If you have minor or no symptoms, your provider may suspect thalassemia based on the results of a routine blood test. Other types of thalassemia cause more severe symptoms that can be found earlier in life, usually before a child is 2 years old. […] To determine whether you or your child have thalassemia, your provider may ask about your risk factors, including your familys and your medical history. Since thalassemia is inherited through genes, your provider may also ask whether someone in your family has thalassemia. […] Your provider might also order blood or genetic tests. […] Your provider may order the following tests to determine whether you or your child have thalassemia: […] Complete blood count (CBC) measures the amount of hemoglobin and different types of blood cells (such as red blood cells) in your blood. People who have thalassemia have fewer healthy red blood cells and less hemoglobin than normal. Depending on the type of thalassemia, your red blood cells may look smaller and show signs of disease under a microscope. […] Special hemoglobin tests measure the types of hemoglobin in a sample of blood. This test can help to distinguish between different medical conditions caused by problems with hemoglobin. […] Genetic testing can help determine what specific type of thalassemia you have.

• #1 Thalassemia – Wikipedia

  https://en.wikipedia.org/wiki/Thalassemia

  Thalassemias are genetic disorders. […] Diagnosis is typically by blood tests including a complete blood count, special hemoglobin tests, and genetic tests. […] Diagnosis may occur before birth through prenatal testing. […] The initial tests for thalassemias are: Complete blood count (CBC): Checks the number, size, and maturity of blood cells. Hemoglobin of less than 10 g/dl may indicate a carrier, below 7 g/dl is indicative of thalassemia major. […] For an exact diagnosis, the following tests can be performed: Hemoglobin electrophoresis is a test that can detect different types of hemoglobin. […] High-performance liquid chromatography (HPLC) is reliable, fully automated, and able to distinguish most types of abnormal hemoglobin including carriers. […] DNA analysis using polymerase chain reaction (PCR) or next-generation sequencing. These tests can identify carriers of thalassemia genes and combination hemoglobinopathies, as well as identifying the exact mutation which underlies the disease.

• #1 Update in Laboratory Diagnosis of Thalassemia – TIF

  https://thalassaemia.org.cy/publications/scientific-literature/update-in-laboratory-diagnosis-of-thalassemia/

  Laboratory diagnosis of thalassemia requires a number of tests including red blood cell indices and Hb and DNA analyses. Thalassemic red blood cell analysis with an automated hematology analyzer is a primary screening for thalassemia since microcytosis and decreased Hb content of red blood cells are hallmarks of all thalassemic red blood cells. […] Today, Hb analysis may be carried out by either automatic high-performance liquid chromatography (HPLC) or capillary zone electrophoresis (CE) system. These two systems give both qualitative and quantitative analysis of Hb components and help to do thalassemia prenatal and postnatal diagnoses within a short period. […] However, those are presumptive diagnoses. Only DNA analysis can be made for specific thalassemia mutation diagnosis. Various molecular techniques have been used for point mutation detection in -thalassemia and large-deletion detection in -thalassemia. […] Recently, screening for both – and -thalassemia genes by next-generation sequencing (NGS) has been introduced. This technique gives an accurate diagnosis of thalassemia that may be misdiagnosed by other conventional techniques.

• #1 Thalassemia Intermedia Workup: Laboratory Studies, Routine Monitoring

  https://emedicine.medscape.com/article/959122-workup

  The initial workup for a patient with suspected thalassemia should include a complete blood count (CBC), review of the blood smear, and iron studies, as follows: […] Thalassemia is diagnostically confirmed via hemoglobin analysis and genetic testing. […] High-performance liquid chromatography (HPLC) or hemoglobin electrophoresis is used in the execution of hemoglobin analysis. […] The diagnosis of beta thalassemia intermedia does not always require DNA-based genotyping, but such analysis may aid in recognizing complex thalassemias such as delta-beta and gamma-delta-delta thalassemia. […] Using the following studies, patients with beta thalassemia intermedia can be monitored for complications during routine health visits with a specialist.

• #1 Laboratory Evaluation of Beta Thalassemia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK585044/

  Beta thalassemia is a hereditary hematological disorder with defects in beta globin chain synthesis. The laboratory evaluation is based on various hematological tests like complete blood count, iron studies, peripheral smear, hemoglobin analysis, and molecular testing. The most reliable method for diagnosis is hemoglobin analysis, for which various techniques like high-performance liquid chromatography (HPLC), electrophoresis, and chromatography are available. […] To confirm the diagnosis, laboratory testing is a necessary requisite. Laboratory evaluation for beta thalassemia can vary from routine blood tests like peripheral smears, complete blood count, iron studies, and hemoglobin analysis to more complex tests, including genetic testing. […] The diagnosis requires a combination of laboratory tests, including measuring red cell indices, Hb analysis, and quantifying HbF and HbA2. Whole blood is collected in EDTA vials, and samples are sent for a complete blood profile, electrophoresis, red cell indices, and molecular testing.

• #1 Thalassemias | Choose the Right Test

  https://arupconsult.com/content/thalassemias

  Laboratory testing for thalassemia is used to diagnose thalassemia in individuals with anemia or isolated microcytosis. […] At least two complementary techniques (eg, a combination of HPLC and electrophoresis) should be used in the initial identification of a thalassemia. Genetic testing may be needed for definitive diagnosis. […] Hb testing is appropriate in the following circumstances: Anemia and low or absent HbA in a neonate or infant, Unexplained anemia and splenomegaly, Unexplained microcytosis, Suspected thalassemia. […] Molecular genetic testing is recommended to confirm the results of Hb analysis. […] Targeted deletion analysis for common HBA1 and HBA2 variants is recommended as a first genetic test for thalassemia, followed by sequencing. […] HBB sequencing, including splice sites and other intronic regions, the proximal promoter region, and the 5 and 3 untranslated regions (UTRs), detects or confirms nearly all thalassemia cases. […] Regular transfusion is associated with a number of complications, including infections, development of antibodies to RBCs, hemolytic reactions, and iron overload that leads to organ failure.

• #1 Genetic Testing for Alpha- and Beta-Thalassemia

  https://www.southcarolinablues.com/web/public/brands/medicalpolicy/external-policies/genetic-testing-for-alpha–and-beta-thalassemia/

  A number of different types of genetic abnormalities are associated with -thalassemia. More than 100 different genetic mutations have been described. Deletion of 1 or more of the -globin chains is the most common genetic defect. This is the type of genetic defect found in approximately 90% of cases. Large genetic rearrangements can also occur from defects in crossover and/or recombination of genetic material during reproduction. Point mutations in 1 or more of the genes can occur that impair transcription and/or translation of the -globin chains. […] Testing is commercially available through several genetic labs. Targeted mutation analysis for known -globin gene mutations can be performed by polymerase chain reaction (PCR). PCR can also be used to identify large deletions or duplications. Newer testing methods have been developed to facilitate identification of -thalassemia mutations, such as multiplex amplification methods and real-time PCR analysis. In patients with suspected -thalassemia and a negative PCR test for genetic deletions, direct sequence analysis of the -globin locus is generally performed to detect point mutations.

• #1 Thalassaemia

  https://www.rcpa.edu.au/Manuals/RCPA-Manual/Clinical-Presentations-and-Diagnoses/T/Thalassaemia

  The Full blood count usually shows a microcytosis and may show mild microcytic anaemia. Diagnosis rests on demonstration of increased HbA2 percentage. […] Problems with diagnosis: beta thalassaemia cannot be diagnosed from HbA2 in neonates; there are beta gene mutations that do not cause an increase in HbA2 (’silent beta thalassaemia trait’) and can only be diagnosed on molecular genetic testing; iron deficiency can lower HbA2 percentage and lead to HbA2 within normal range in patients with mild beta thalassaemia trait – testing should be deferred until correction of iron deficiency except in pregnancy, when the diagnosis cannot be delayed. […] The diagnosis of alpha thalassaemia trait is usually suspected when there is microcytosis not explained by beta- or other thalassemia (based on Hb electrophoresis and HPLC) or iron deficiency. […] Definitive diagnosis requires DNA analysis (see molecular genetic testing).

• #1 Alpha Thalassemia | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/a/alpha-thalassemia.html

  Alpha thalassemia occurs when 1 or more of the 4 alpha-globin genes that make up part of the hemoglobin molecule are missing or damaged. […] The following blood tests are done to check for the condition and to tell if you are a carrier and can pass the disorder on to your children: […] A DNA test is needed to make a diagnosis of alpha thalassemia.

• #1 Alpha-Thalassemia: Diagnosis & therapy | MLL | MLL

  https://www.mll.com/en/hemoglobinopathies-thalassemias-and-abnormal-hemoglobins/thalassemia-alpha-thalassemia

  Alpha-thalassemia is caused by disruption of alpha-globin genes resulting in hypochrome, microcytic anemia of varying degree. […] Diagnosis or exclusion of alpha-thalassemia is made by a combination of blood count, iron status, hemoglobin separation, and molecular genetic testing. […] Alpha-thalassemia is typically associated with hypochromic, microcytic anemia. The severity of blood count changes depends on the number of disrupted alpha-globin genes. […] Molecular genetic studies are necessary for unequivocal detection and definitive determination of the form of alpha-thalassemia. The most common cause of alpha-thalassemia is the loss of one or more alpha-globin genes due to deletions in the alpha-globin complex.

• #1 Thalassemias – Hematology and Oncology – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/hematology-and-oncology/anemias-caused-by-hemolysis/thalassemias

  In quantitative hemoglobin studies, mild elevation of Hb A2 only is diagnostic for beta-thalassemia minor. In beta-thalassemia major, Hb F is also usually increased, sometimes to as much as 90%, and Hb A2 is usually elevated to 3%. […] Hb H disease can be diagnosed by demonstrating the fast-migrating Hb H or Barts fractions on hemoglobin electrophoresis. The specific molecular defect can be characterized but does not alter the clinical approach. […] If bone marrow examination is done for anemia (eg, to exclude other causes), it shows marked erythroid hyperplasia. […] Prenatal diagnosis and genetic counseling are standard practice for patients with fetuses at risk and can guide fetal therapy in alpha thalassemia major.

• #1 beta-thalassemia: diagnosis & therapy | MLL

  https://www.mll.com/en/hemoglobinopathies-thalassemias-and-abnormal-hemoglobins/thalassemia-beta-thalassemia

  Beta-thalassemia is caused by reduced activity of beta-globin genes resulting in hypochrome, microcytic anemia of varying degree. […] Diagnosis or exclusion of beta-thalassemia is made by a combination of blood count, iron status, hemoglobin separation, and molecular genetic testing. […] Beta-Thalassemia is typically associated with hypochromic, microcytic anemia. The severity of blood count changes depends on the number of disrupted beta-globin genes (b0) or their residual function (b+). In beta-thalassemia minor, mild microcytosis and hypochromia with erythrocytosis and occasionally slightly decreased hemoglobin concentration are observed. In beta-thalassemia intermedia or major, moderate to severe hypochromic anemia with hemoglobin concentrations sometimes below 7 g/dL are seen. […] The iron status in -thalassemia is usually normal. In pronounced forms with hemolysis, ineffective erythropoiesis, and consequent need for repeated transfusions, iron overloads with elevation of ferritin occur.

• #1 beta-thalassemia: diagnosis & therapy | MLL

  https://www.mll.com/en/hemoglobinopathies-thalassemias-and-abnormal-hemoglobins/thalassemia-beta-thalassemia

  Hemoglobin electrophoresis in beta-thalassemia minor shows HbA2 levels typically above 3.2% (b+) or above 3.6% (b0). In some patients, elevated HbF can also be detected (0.5-6%). In patients with beta-thalassemia intermedia and major, HbA2 and HbF fractions are highly variable with normal to elevated HbA2 and HbF ranging from 10% to almost 100%. […] The most common causes of beta-thalassemia are single nucleotide variations in the HBB gene that can be detected by sequencing. In some cases, larger deletions in the beta-globin complex also underlie beta-thalassemia and are detected by multiplex ligation-dependent probe amplification (MLPA). This method also detects deletions affecting multiple genes of the beta-globin gene complex, e.g., -thalassemia.

• #1 Thalassemias – Hematology and Oncology – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/hematology-and-oncology/anemias-caused-by-hemolysis/thalassemias

  Diagnosis is based on genetic tests and quantitative hemoglobin analysis. […] Thalassemia trait is commonly detected when routine peripheral blood smear and complete blood count show microcytic anemia and elevated red cell count. If desired, the diagnosis of beta thalassemia trait can be confirmed with quantitative hemoglobin studies. No intervention is needed. In females, anemia can be worsened by pregnancy. […] More severe thalassemias are suspected in patients with a family history, suggestive symptoms or signs, or microcytic hemolytic anemia. If thalassemias are suspected, laboratory tests for microcytic and hemolytic anemias and quantitative hemoglobin studies (hemoglobin electrophoresis) are done. Serum bilirubin, iron, and ferritin levels are increased. […] In beta-thalassemia major, anemia is severe, often with hemoglobin 6 g/dL (60 g/L). The red blood cell count is elevated relative to hemoglobin, and the cells are very microcytic. The blood smear is virtually diagnostic, with many nucleated erythroblasts; target cells; small, pale red blood cells; and punctate and diffuse basophilic stippling.

• #1 Thalassaemia | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/thalassaemia

  Thalassaemia can be diagnosed through: […] Thalassaemia is usually diagnosed within the first six months of life and can be fatal in early childhood without ongoing treatment. […] The only way to detect if someone is a carrier is by a specific blood test for thalassaemia. […] Thalassaemia can be diagnosed through: […] It is suggested that all couples thought to be at risk be tested for thalassaemia carrier status, especially before starting a family. […] Carrier couples may elect not to have children, but choose to adopt, foster or consider using donor sperm or eggs. […] Genetic counsellors are health professionals qualified in both counselling and genetics. […] If thalassaemia runs in your family, a genetic counsellor can explain what genetic testing options are available to you and other family members.

• #1 Thalassemia: Symptoms, Causes, & Treatment

  https://www.webmd.com/a-to-z-guides/what-is-thalassemia

  Iron studies. These tests measure levels of iron in your blood so the doctor can rule out iron deficiency as the cause of anemia. […] Erythrocyte porphyrin levels. This test can rule out both iron deficiency and lead poisoning as the cause of the symptoms. […] You may also have genetic testing to find out what type of thalassemia you have. […] If you’re pregnant or trying to conceive, you can have genetic blood testing to learn whether you or your partner carry any of the genes that cause thalassemia. You can also get tests to learn whether your baby will have the condition. Such tests include: […] Chorionic villus sampling. This tests a tiny piece of the placenta to see if the fetus has the genes that cause thalassemia. Doctors usually do it around the 11th week of pregnancy. […] Amniocentesis. Usually done around the 16th week of pregnancy, this test is done on a sample of the fluid surrounding the fetus.

• #1 Alpha Thalassemia: Screening and Diagnosis – The Waiting Room

  https://thewaitingroom.karger.com/tell-me-about/alpha-thalassemia-screening-and-diagnosis/

  There are different ways to do the test: taking a sample of blood from the umbilical cord (cordocentesis), testing the fluid surrounding the baby (amniocentesis), taking a sample of the placenta (chorionic villus sampling). […] Ultrasound analysis may be used and some non-invasive tests are currently under investigation, such as testing fetal DNA found in the mother’s bloodstream. […] A pregnant woman with AT needs special care during her pregnancy. Anemia can become more severe.

• #1 Thalassemia: Symptoms, Causes, & Treatment

  https://www.webmd.com/a-to-z-guides/what-is-thalassemia

  Digital PCR analysis. This type of noninvasive genetic testing involves testing the mother’s blood for DNA from the fetus. […] If you or your child are diagnosed with thalassemia, you’ll need to see a blood expert known as a hematologist. You may also need other special doctors on your team, like those who treat the heart or liver.

• #1 How is thalassaemia diagnosed? – UKTS

  https://ukts.org/how-is-it-diagnosed/

  If the test results show a positive thalassaemia carrier result, the baby’s biological father is offered screening. […] If the blood test reveals the father is also a carrier or the biological father is absent or declines testing, parents will be offered pre-natal diagnosis (PND) in the form of diagnostic tests to determine if their unborn child will have beta thalassaemia. […] A diagnostic test will show if the baby has thalassaemia, is a carrier or if the baby is completely unaffected. […] Ideally, PND should be performed by 12 weeks and 6 days of pregnancy. […] Further counselling and information are provided if the presence of thalassaemia is confirmed, including advice and support for the options of continuation or termination of pregnancy if thalassaemia major is identified. […] If the mother is found to be a carrier of thalassaemia, she will be contacted by a specialist nurse or midwife counsellor for genetic counselling to discuss the result and implications.

• #1

  https://www.nhs.uk/conditions/thalassaemia/diagnosis/

  Thalassaemia is often detected during pregnancy or soon after birth. […] Blood tests can also be carried out at any time to check for thalassaemia or see if you’re a carrier of thalassaemia and are at risk of having a child with it. […] A blood test can be carried out at any point to diagnose thalassaemia if a child or adult has symptoms of thalassaemia and the condition was not picked up earlier on. […] A blood test can be done at any time to find out if you have the thalassaemia trait and are at risk of having a child with thalassaemia. […] If you’re worried that you could be a carrier of thalassaemia, ask for a test from your GP surgery. Both men and women can have the test.

• #1

  https://111.wales.nhs.uk/thalassaemia/

  Thalassaemia is often detected during pregnancy or soon after birth. […] Blood tests can also be carried out at any time to check for thalassaemia or see if you’re a carrier of thalassaemia and are at risk of having a child with it. […] Screening to check if a baby is at risk of being born with thalassaemia is offered to all pregnant women in Wales. […] This involves having a blood test to check if you have the thalassaemia trait. […] If the mother does have the trait, the father is then offered a test to see if he carries it, too. […] Screening should ideally be carried out before you’re 10 weeks pregnant so you and your partner have time to consider the option of further tests to find out if your baby will be born with thalassaemia. […] Newborn babies are not routinely tested for thalassaemia because the test used is not always reliable soon after birth and thalassaemia is not immediately dangerous.

• #1 How is thalassaemia diagnosed? – UKTS

  https://ukts.org/how-is-it-diagnosed/

  Diagnosis of thalassaemia: […] Haematological indices reduction in haemoglobin level, size and volume of red blood cell (Mean Corpuscular Haemoglobin MCH and Mean Corpuscular Volume MCV) […] A Family Origin Questionnaire: Sickle cell and thalassaemia screening: family origin questionnaire […] Blood film microcytic and hypochromic red blood cells, anisocytosis, poikilocytosis […] Haemoglobin electrophoresis detection of different proteins making up haemoglobin molecule HbA, HbA2, HbF […] Molecular methods DNA analysis […] It is important to note that anyone can be screened for thalassaemia at any point of their lives, though carrier status is only detected during infancy from 7 months and above. […] All women whether they are in high or low prevalence areas are offered screening for thalassaemia. The actual screening test for thalassaemia, to find out if you are a carrier, is a simple blood test taking just a few minutes. The test should be offered to all pregnant women before they reach 10 weeks and 6 days of pregnancy.

• #1 An Early Diagnosis of Thalassemia: A Boon to a Healthy Society | IntechOpen

  https://www.intechopen.com/chapters/79020

  The mutation which remains unidentified after these two screenings will be then characterized by DNA sequencing. […] The government of the country should make various screening and diagnosis mandatory for the eradication of thalassemia. […] Premarriage screening should be implemented to detect thalassemia carriers and hemoglobinopathies such as sickle cell trait. […] In antenatal screening irrespective of gestational age of all pregnant women should be screened for carrier status of thalassemia and hemoglobinopathies. […] The prenatal diagnosis includes the investigation of fetal material from chorionic villi, amniotic liquid, string blood, and fetal DNA in maternal dissemination. […] Advances in molecular testing have worked with the assurance of complex thalassemias and hemoglobinopathies saw in ethnically varying population. Comprehensive screening programs highlighted recognizing carriers and offering prenatal diagnosis in pregnancies for thalassemia have been incorporated in Canada and European countries.

• #1 Alpha Thalassemia: Screening and Diagnosis – The Waiting Room

  https://thewaitingroom.karger.com/tell-me-about/alpha-thalassemia-screening-and-diagnosis/

  This is the sixth part of our series about the condition based on our patient booklet Fast Facts for Patients: Alpha Thalassemia. This article focuses on the aspects of screening and diagnosis in alpha thalassemia (AT). […] In some parts of the world, all newborn babies have a blood test for thalassemia. […] A doctor may suggest testing for thalassemia because you (or your child) show some of the symptoms of AT or if a routine blood test shows that you or your child have mild microcytic anemia. […] To identify the exact genetic changes, you’ll need to have DNA tests done on a blood sample. […] Before having screening tests for thalassemia, you may be offered genetic counseling. […] If you’re already pregnant, your doctor will want to do genetic testing early in the pregnancy in case your baby needs treatment before birth.

• #1 Alpha- and Beta-thalassemia: Rapid Evidence Review | AAFP

  https://www.aafp.org/pubs/afp/issues/2022/0300/p272.html

  Thalassemia should be suspected in patients with microcytic anemia and normal or elevated ferritin levels. […] Hemoglobin electrophoresis may reveal common characteristics of different thalassemia subtypes, but genetic testing is required to confirm the diagnosis. […] Thalassemia is generally asymptomatic in trait and carrier states. […] Thalassemia should be considered in patients with microcytic anemia. […] The differential diagnosis for microcytic anemia includes iron deficiency anemia, lead poisoning, sideroblastic anemia, anemia of chronic disease, copper deficiency, zinc toxicity, and hemoglobinopathies. […] Initial evaluation includes a complete blood count and indices, peripheral smear, serum ferritin level, and blood lead level. […] Peripheral smear in patients with thalassemia will typically show microcytosis, hypochromia, poikilocytosis, and target cells.

• #1 Alpha- and Beta-thalassemia: Rapid Evidence Review | AAFP

  https://www.aafp.org/pubs/afp/issues/2022/0300/p272.html

  Serum ferritin measurement is the best initial test to evaluate for iron deficiency. Thalassemia should be suspected in patients with microcytic anemia and normal or elevated ferritin levels. […] Decreased HbA on electrophoresis is characteristic of thalassemia. Other findings include elevated HbA2 in beta-thalassemia, and Hb Barts disease in alpha-thalassemia major. […] Genetic testing should be used to confirm the diagnosis and identify mutations that correlate with severity of disease. […] Given the varied clinical manifestations of thalassemia subtypes, the Thalassaemia International Federation distinguishes between transfusion-dependent thalassemia (TDT) and nontransfusion-dependent thalassemia (NTDT). Treatment decisions are more often based on this classification than on subtype classification (i.e., carrier, trait, minor, intermedia, major).

• #1 Thalassaemia

  https://www.rcpa.edu.au/Manuals/RCPA-Manual/Clinical-Presentations-and-Diagnoses/T/Thalassaemia

  An inherited disorder characterised by reduced globin chain synthesis and secondary imbalance of globin chains. […] Thalassaemias are classified according to the globin gene affected, and also according to the phenotype. […] Full blood count, Blood film, red cell indices (especially MCV), Haemoglobin electrophoresis, HbA2, HbF, HbH inclusions, Iron studies, directed molecular testing of relevant genes. […] The diagnosis of thalassaemic disorders usually requires a combination of techniques and involves evaluation of red cell indices and blood film, quantitation of HbA2 and HbF, detection of variant haemoglobin and DNA analysis when indicated. […] It is important to identify and treat any associated iron deficiency, as this may lead to reduced HbA2 and therefore lead to a false normal HbA2 in patients with beta-thalassaemia trait.

• #1 Thalassemia: Pathophysiology, Diagnosis, and Advances in Treatment

  https://www.mdpi.com/2039-4365/14/4/10

  Evaluating thalassemia can be challenging due to the overlap of its signs and symptoms with other hematologic disorders. […] Differentiating thalassemia from other conditions requires a comprehensive approach, including genetic testing, hemoglobin electrophoresis, and specific hematologic parameter assessments like the MCV/RBC ratio and HbA2 levels. […] Molecular genetic testing is crucial for confirming thalassemia diagnoses and identifying specific gene mutations, particularly in the alpha- and beta-globin genes, as highlighted by various studies. […] These advanced molecular diagnostic tools have significantly enhanced the sensitivity and specificity of genetic testing, enabling the precise identification of mutation carriers, which is vital for accurate diagnoses and genetic counseling.

• #1 Thalassaemia Testing: Importance of Screening & Diagnosis | Metropolis TruHealth Blog

  https://www.metropolisindia.com/blog/preventive-healthcare/importance-of-thalassaemia-testing

  Thalassaemia is one of the most common inherited blood disorders worldwide. […] This is why screening and testing for thalassaemia diagnosis are critical in identifying individuals who may be carriers or affected by the disease early on. […] Therefore, it is essential to diagnose thalassaemia as early as possible. […] Through screening and testing, doctors can be sure about the diagnosis of thalassaemia and begin treatment before any of these complications arise. […] Early thalassaemia diagnosis means that individuals can receive treatment quickly, drastically reducing the symptoms and allowing them to lead healthier and more fulfilling lives. […] Without an accurate thalassaemia diagnosis, it is difficult for doctors to know which course of treatment is best for each patient. […] The first step in thalassaemia diagnosis usually involves a complete blood count (CBC) to check for anaemia and abnormal red blood cells.

• #1 Thalassemia: Types, Traits, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14508-thalassemias

  Thalassemia is an inherited blood disorder that affects your bodys ability to produce hemoglobin and healthy red blood cells. […] Thalassemia is classified as trait, minor, intermedia and major to describe how severe the condition is. […] Moderate and severe thalassemia are often diagnosed in childhood because symptoms usually appear within the first two years of your childs life. […] Your healthcare provider may order various blood tests to diagnose thalassemia: A complete blood count (CBC) that includes measures of hemoglobin and the quantity (and size) of red blood cells. People with thalassemia have fewer healthy red blood cells and less hemoglobin than normal. […] Standard treatments for thalassemia major are blood transfusions and iron chelation. […] A blood transfusion involves receiving injections of red blood cells through a vein to restore normal levels of healthy red blood cells and hemoglobin.

• #1 What is Thalassemia? | CAF

  https://thalassemia.org/What-is-Thalassemia

  Thalassemia is the name of a group of genetic blood disorders. […] Since Thalassemia is not a single disorder but a group of related disorders that affect the human body in similar ways, it is important to understand the differences between the various types of the disorder. […] If you have the trait, your physician may prescribe iron supplements because your red blood cells are smaller than typical. Unless you also have iron deficiency in addition to Thalassemia, this is not needed and should be avoided. […] The most important reason for discovering if you carry the trait is this: If two people who each carry the same form of Thalassemia trait have a child, there is a 25% chance that this child will be born with a severe form of Thalassemia. […] Beta Thalassemia occurs when hemoglobin lacks enough beta protein, primarily affecting individuals of Mediterranean, Middle Eastern, African, and Southeast Asian descent.

• #1 Thalassemia: Pathophysiology, Diagnosis, and Advances in Treatment

  https://www.mdpi.com/2039-4365/14/4/10

  Thalassemia represents a diverse group of inherited hematological disorders characterized by defective globin chain synthesis, leading to chronic anemia and associated complications. […] Advances in diagnostic techniques have enhanced our ability to detect and characterize these mutations, facilitating early and accurate diagnoses. […] This review aims to provide a comprehensive overview of thalassemia, encompassing its epidemiology, pathophysiology, clinical manifestations, diagnostic approaches, and current treatment modalities. […] Diagnosing thalassemia involves a combination of clinical evaluation, laboratory tests, and a genetic analysis to confirm the presence of the disease and determine its severity. […] Thalassemia screening and diagnostic protocols encompass a range of methods and guidelines.

• #2 Laboratory Evaluation of Beta Thalassemia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK585044/

  Beta thalassemia is a hereditary hematological disorder with defects in beta globin chain synthesis. The laboratory evaluation is based on various hematological tests like complete blood count, iron studies, peripheral smear, hemoglobin analysis, and molecular testing. The most reliable method for diagnosis is hemoglobin analysis, for which various techniques like high-performance liquid chromatography (HPLC), electrophoresis, and chromatography are available. […] To confirm the diagnosis, laboratory testing is a necessary requisite. Laboratory evaluation for beta thalassemia can vary from routine blood tests like peripheral smears, complete blood count, iron studies, and hemoglobin analysis to more complex tests, including genetic testing. […] The diagnosis requires a combination of laboratory tests, including measuring red cell indices, Hb analysis, and quantifying HbF and HbA2. Whole blood is collected in EDTA vials, and samples are sent for a complete blood profile, electrophoresis, red cell indices, and molecular testing.

• #2 Thalassemia: Types, Traits, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14508-thalassemias

  Thalassemia is an inherited blood disorder that affects your bodys ability to produce hemoglobin and healthy red blood cells. […] Thalassemia is classified as trait, minor, intermedia and major to describe how severe the condition is. […] Moderate and severe thalassemia are often diagnosed in childhood because symptoms usually appear within the first two years of your childs life. […] Your healthcare provider may order various blood tests to diagnose thalassemia: A complete blood count (CBC) that includes measures of hemoglobin and the quantity (and size) of red blood cells. People with thalassemia have fewer healthy red blood cells and less hemoglobin than normal. […] Standard treatments for thalassemia major are blood transfusions and iron chelation. […] A blood transfusion involves receiving injections of red blood cells through a vein to restore normal levels of healthy red blood cells and hemoglobin.

• #2 Thalassemia: Symptoms, Causes, & Treatment

  https://www.webmd.com/a-to-z-guides/what-is-thalassemia

  Your doctor might diagnose thalassemia after a routine blood test if you have no symptoms or just mild ones. More serious types of thalassemia usually bring on noticeable symptoms before you’re 2 years old. […] If a doctor thinks you or your child may have it, they’ll do a physical exam and ask questions about symptoms and health history. […] They’ll also likely do blood tests, such as: […] Complete blood count. This is usually the first test your doctor will do. It measures amounts of hemoglobin and certain blood cells in your blood. Those with thalassemia have fewer healthy red blood cells and less hemoglobin than usual. […] Hemoglobin electrophoresis test. This measures how much and what type of hemoglobin you have. […] Peripheral blood smear. This test, also called a manual differential, looks at certain characteristics of red blood cells.

• #2 Update in Laboratory Diagnosis of Thalassemia – TIF

  https://thalassaemia.org.cy/publications/scientific-literature/update-in-laboratory-diagnosis-of-thalassemia/

  Laboratory diagnosis of thalassemia requires a number of tests including red blood cell indices and Hb and DNA analyses. Thalassemic red blood cell analysis with an automated hematology analyzer is a primary screening for thalassemia since microcytosis and decreased Hb content of red blood cells are hallmarks of all thalassemic red blood cells. […] Today, Hb analysis may be carried out by either automatic high-performance liquid chromatography (HPLC) or capillary zone electrophoresis (CE) system. These two systems give both qualitative and quantitative analysis of Hb components and help to do thalassemia prenatal and postnatal diagnoses within a short period. […] However, those are presumptive diagnoses. Only DNA analysis can be made for specific thalassemia mutation diagnosis. Various molecular techniques have been used for point mutation detection in -thalassemia and large-deletion detection in -thalassemia. […] Recently, screening for both – and -thalassemia genes by next-generation sequencing (NGS) has been introduced. This technique gives an accurate diagnosis of thalassemia that may be misdiagnosed by other conventional techniques.

• #2 Thalassemias – Hematology and Oncology – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/hematology-and-oncology/anemias-caused-by-hemolysis/thalassemias

  Diagnosis is based on genetic tests and quantitative hemoglobin analysis. […] Thalassemia trait is commonly detected when routine peripheral blood smear and complete blood count show microcytic anemia and elevated red cell count. If desired, the diagnosis of beta thalassemia trait can be confirmed with quantitative hemoglobin studies. No intervention is needed. In females, anemia can be worsened by pregnancy. […] More severe thalassemias are suspected in patients with a family history, suggestive symptoms or signs, or microcytic hemolytic anemia. If thalassemias are suspected, laboratory tests for microcytic and hemolytic anemias and quantitative hemoglobin studies (hemoglobin electrophoresis) are done. Serum bilirubin, iron, and ferritin levels are increased. […] In beta-thalassemia major, anemia is severe, often with hemoglobin 6 g/dL (60 g/L). The red blood cell count is elevated relative to hemoglobin, and the cells are very microcytic. The blood smear is virtually diagnostic, with many nucleated erythroblasts; target cells; small, pale red blood cells; and punctate and diffuse basophilic stippling.

• #2 Thalassemias | Choose the Right Test

  https://arupconsult.com/content/thalassemias

  Laboratory testing for thalassemia is used to diagnose thalassemia in individuals with anemia or isolated microcytosis. […] At least two complementary techniques (eg, a combination of HPLC and electrophoresis) should be used in the initial identification of a thalassemia. Genetic testing may be needed for definitive diagnosis. […] Hb testing is appropriate in the following circumstances: Anemia and low or absent HbA in a neonate or infant, Unexplained anemia and splenomegaly, Unexplained microcytosis, Suspected thalassemia. […] Molecular genetic testing is recommended to confirm the results of Hb analysis. […] Targeted deletion analysis for common HBA1 and HBA2 variants is recommended as a first genetic test for thalassemia, followed by sequencing. […] HBB sequencing, including splice sites and other intronic regions, the proximal promoter region, and the 5 and 3 untranslated regions (UTRs), detects or confirms nearly all thalassemia cases. […] Regular transfusion is associated with a number of complications, including infections, development of antibodies to RBCs, hemolytic reactions, and iron overload that leads to organ failure.

• #2 Thalassemia: Pathophysiology, Diagnosis, and Advances in Treatment

  https://www.mdpi.com/2039-4365/14/4/10

  Evaluating thalassemia can be challenging due to the overlap of its signs and symptoms with other hematologic disorders. […] Differentiating thalassemia from other conditions requires a comprehensive approach, including genetic testing, hemoglobin electrophoresis, and specific hematologic parameter assessments like the MCV/RBC ratio and HbA2 levels. […] Molecular genetic testing is crucial for confirming thalassemia diagnoses and identifying specific gene mutations, particularly in the alpha- and beta-globin genes, as highlighted by various studies. […] These advanced molecular diagnostic tools have significantly enhanced the sensitivity and specificity of genetic testing, enabling the precise identification of mutation carriers, which is vital for accurate diagnoses and genetic counseling.

• #2 Alpha-Thalassemia: Diagnosis & therapy | MLL | MLL

  https://www.mll.com/en/hemoglobinopathies-thalassemias-and-abnormal-hemoglobins/thalassemia-alpha-thalassemia

  Alpha-thalassemia is caused by disruption of alpha-globin genes resulting in hypochrome, microcytic anemia of varying degree. […] Diagnosis or exclusion of alpha-thalassemia is made by a combination of blood count, iron status, hemoglobin separation, and molecular genetic testing. […] Alpha-thalassemia is typically associated with hypochromic, microcytic anemia. The severity of blood count changes depends on the number of disrupted alpha-globin genes. […] Molecular genetic studies are necessary for unequivocal detection and definitive determination of the form of alpha-thalassemia. The most common cause of alpha-thalassemia is the loss of one or more alpha-globin genes due to deletions in the alpha-globin complex.

• #2 Diagnosis of α-thalassaemia by colorimetric gap loop mediated isothermal amplification | Scientific Reports

  https://www.nature.com/articles/s41598-023-36676-2

  -Thalassaemia is an inherited haemoglobin disorder that results from the defective synthesis of -globin protein. […] A rapid and accurate molecular detection assay is essential for prevention of the disease in populations where -thalassaemia 1 is common. […] Loop mediated isothermal amplification (LAMP) amplifies target DNA at a constant temperature and does not require a thermocycler. […] This study developed a colorimetric Gap-LAMP using malachite green to allow naked eye visualization of two deletional -thalassaemia 1 commonly found in Asian populations, the Southeast Asian type (–SEA) and the Thai type (–THAI) deletions. […] The Gap-LAMP was performed on DNA samples from 410 individuals carrying various -thalassaemia gene defects with 100% concordance with conventional Gap-PCR analysis.

• #2 Thalassaemia

  https://labtestsonline.org.uk/conditions/thalassaemia

  Thalassaemias are a group of disorders in which mutations in one or more of the alpha or beta globin genes cause a reduction in the amount of the HbA produced. This leads to a reduction in HbA, the relative increase in the amount of minor haemoglobins HbA2 and HbF, and perhaps detection of unusual haemoglobin types. […] Diagnosis of alpha thalassaemia trait is usually by exclusion of other causes of microcytic anaemia. Confirmatory testing by DNA analysis is available but is not routinely done. […] The clinical picture associated with HbH disease is extremely variable, however. Some individuals are asymptomatic while others have severe Anaemia. […] It is important that iron therapy in thalassaemic patients is only given when specific iron tests (FERRITIN, SERUM IRON, TIBC TRANSFERRIN) have confirmed iron deficiency.

• #2 Beta Thalassemia: Types, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/23574-beta-thalassemia

  Beta thalassemia is an inherited blood disorder that limits your bodys ability to make beta-globin. […] Beta thalassemia is one of two main types of thalassemia. […] Beta thalassemia is often diagnosed in childhood. Beta thalassemia major, the most severe form, is diagnosed early in childhood, by age 2. Your doctor will diagnose beta thalassemia based on your symptoms and blood test results. […] Your doctor will diagnose beta thalassemia by performing a simple blood draw and analyzing the sample. Tests may include: A complete blood count (CBC): A CBC provides information about your blood cells, including your red blood cells. […] Molecular genetic testing: Molecular genetic testing allows your doctor to study your hemoglobin closely and identify the mutation associated with beta thalassemia.

• #2 How is thalassaemia diagnosed? – UKTS

  https://ukts.org/how-is-it-diagnosed/

  Diagnosis of thalassaemia: […] Haematological indices reduction in haemoglobin level, size and volume of red blood cell (Mean Corpuscular Haemoglobin MCH and Mean Corpuscular Volume MCV) […] A Family Origin Questionnaire: Sickle cell and thalassaemia screening: family origin questionnaire […] Blood film microcytic and hypochromic red blood cells, anisocytosis, poikilocytosis […] Haemoglobin electrophoresis detection of different proteins making up haemoglobin molecule HbA, HbA2, HbF […] Molecular methods DNA analysis […] It is important to note that anyone can be screened for thalassaemia at any point of their lives, though carrier status is only detected during infancy from 7 months and above. […] All women whether they are in high or low prevalence areas are offered screening for thalassaemia. The actual screening test for thalassaemia, to find out if you are a carrier, is a simple blood test taking just a few minutes. The test should be offered to all pregnant women before they reach 10 weeks and 6 days of pregnancy.

• #2 Thalassemia: Diagnosis & Treatment | NewYork-Presbyterian

  https://www.nyp.org/pediatrics/noncancerous-blood-disorders/thalassemia/treatment

  Carrier testing. You and your partner can have a genetic screening test for thalassemia to see if they carry a mutated gene before they plan to have children. […] Prenatal testing. If both you and your partner are carriers for thalassemia, your doctor can check the fetus by either chronic villus sampling (CVS), done at around eight to 11 weeks into the pregnancy, or an amniocentesis, done about 16 weeks into the pregnancy.

• #2

  https://111.wales.nhs.uk/thalassaemia/

  But the main type, beta thalassaemia major, is often picked up as part of the newborn blood spot test (heel prick). […] A blood test can be carried out at any point to diagnose thalassaemia if a child or adult has symptoms of thalassaemia and the condition was not picked up earlier on. […] A blood test can be done at any time to find out if you have the thalassaemia trait and are at risk of having a child with thalassaemia. […] This can be particularly useful if you have a family history of the condition or your partner is known to carry thalassaemia.

• #2

  https://www.nhs.uk/conditions/thalassaemia/

  Thalassaemia is often detected during pregnancy or soon after birth. […] Screening for thalassaemia in pregnancy is offered to all pregnant women in England to check if there’s a risk of a child being born with the condition, and some types may be picked up during the newborn blood spot test (heel prick test). […] Blood tests can also be carried out at any age to check for thalassaemia or to see if you’re a carrier of a faulty gene that causes it.

• #2 How is thalassaemia diagnosed? – UKTS

  https://ukts.org/how-is-it-diagnosed/

  If the blood tests reveal that both parents are carriers, then they will be offered further counselling to help them through a very difficult time. […] The NHS New-born Blood Spot Screening Programme uses the heel prick test where a few drops of blood are taken from the baby’s heel when it is 5 days old to test for 9 different health conditions, of which sickle cell disease is one. […] Although thalassaemia is not one of the conditions tested for in the New-born Programme, if a baby has beta thalassaemia major, it will be detected and reported as part of the process. […] However, the New-born Screening Programme cannot identify carriers of thalassaemia until they are over approximately seven-twelve months in age. […] Pre-implantation genetic diagnosis allows testing of eggs or embryos from in-vitro fertilisation techniques to allow implantation of disease-free embryos.

• #2 Thalassemia: Symptoms, Causes, & Treatment

  https://www.webmd.com/a-to-z-guides/what-is-thalassemia

  Iron studies. These tests measure levels of iron in your blood so the doctor can rule out iron deficiency as the cause of anemia. […] Erythrocyte porphyrin levels. This test can rule out both iron deficiency and lead poisoning as the cause of the symptoms. […] You may also have genetic testing to find out what type of thalassemia you have. […] If you’re pregnant or trying to conceive, you can have genetic blood testing to learn whether you or your partner carry any of the genes that cause thalassemia. You can also get tests to learn whether your baby will have the condition. Such tests include: […] Chorionic villus sampling. This tests a tiny piece of the placenta to see if the fetus has the genes that cause thalassemia. Doctors usually do it around the 11th week of pregnancy. […] Amniocentesis. Usually done around the 16th week of pregnancy, this test is done on a sample of the fluid surrounding the fetus.

• #2

  https://haematologica.org/article/view/haematol.2022.282667

  Although considered a mild clinical condition, many laboratory issues of the carrier state of -thalassemia remain unresolved. Accurate laboratory screening of -thalassemia traits is crucial for preventing the birth of a -thalassemia major child. Identification of carriers in the laboratory is affected by factors that influence red cell indices and HbA2 quantification. […] However, the combination of mean corpuscular volume, mean corpuscular hemoglobin, and hemoglobin analysis increases the diagnostic accuracy. Diagnostic problems arising from non-genetic factors can be eliminated by carefully screening the patients clinical history. […] Each laboratory should determine the population-specific reference ranges and be wary of machine-related variations of HbA2 levels, the prevalence of silent mutations in the community.

• #2 Thalassaemia Testing: Importance of Screening & Diagnosis | Metropolis TruHealth Blog

  https://www.metropolisindia.com/blog/preventive-healthcare/importance-of-thalassaemia-testing

  One common blood test used for thalassaemia diagnosis is haemoglobin electrophoresis, which measures the level of different types of haemoglobin in the blood. […] Another tool for thalassaemia diagnosis is DNA analysis, which can detect mutations in specific genes associated with thalassaemia. […] X-rays of the bones may be used to detect the bone abnormalities caused by thalassaemia. […] These X-rays can help with thalassaemia diagnosis and monitor the progression of the disease. […] Regular check-ups and lab tests can help detect any changes in haemoglobin levels or other signs of disease so that doctors can act quickly to stop it from worsening.

• #2 Thalassemia: Types, Traits, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14508-thalassemias

  Iron chelation involves the removal of excess iron from your body. […] A bone marrow transplant from a compatible sibling offers the best chance at a cure for thalassemia. […] You should expect a normal life expectancy if you have mild thalassemia. Even if your condition is moderate or severe, you have a good chance of long-term survival if you follow your treatment program (transfusions and iron chelation therapy).

• #2 Update on the Diagnosis and Management of Thalassemia – Hematology & Oncology

  https://www.hematologyandoncology.net/archives/january-2014/update-on-the-diagnosis-and-management-of-thalassemia/

  Patients with thalassemia minor or thalassemia trait require no treatment. However, it is important that these individuals receive genetic counseling because their offspring may be affected more severely. […] Current bone marrow transplantation protocols offer high rates of cure for some patients.

• #3 Alpha- and Beta-thalassemia: Rapid Evidence Review | AAFP

  https://www.aafp.org/pubs/afp/issues/2022/0300/p272.html

  Thalassemia should be suspected in patients with microcytic anemia and normal or elevated ferritin levels. […] Hemoglobin electrophoresis may reveal common characteristics of different thalassemia subtypes, but genetic testing is required to confirm the diagnosis. […] Thalassemia is generally asymptomatic in trait and carrier states. […] Thalassemia should be considered in patients with microcytic anemia. […] The differential diagnosis for microcytic anemia includes iron deficiency anemia, lead poisoning, sideroblastic anemia, anemia of chronic disease, copper deficiency, zinc toxicity, and hemoglobinopathies. […] Initial evaluation includes a complete blood count and indices, peripheral smear, serum ferritin level, and blood lead level. […] Peripheral smear in patients with thalassemia will typically show microcytosis, hypochromia, poikilocytosis, and target cells.

• #3 Distinguishing iron deficiency anaemia from thalassemia trait in clinical obstetric practice

  https://oatext.com/distinguishing-iron-deficiency-anemia-from-thalassemia-trait-in-clinical-obstetric-practice.php

  Of all of the causes of non-iron deficient anaemias, thalassemia trait is the most common and difficult to distinguish from IDA since it causes a microcytic, hypochromic anaemia. This paper will review the characteristics of thalassemia trait, when to suspect it, how to distinguish it from IDA, and the clinical implications of the diagnosis. […] The diagnosis of beta thalassemia is generally made using High Performance Liquid Chromatography (HPLC) or Capillary Zone Electrophoresis (CZE), while alpha thalassemia can be diagnosed using a phenotypic method (a special stain of the peripheral blood smear) or a genotypic method which identifies the common mutations. […] In beta thalassemia trait, the deficiency of beta globin chains leads alpha chains to pair instead with gamma and delta chains. This leads to an increase in HbA2 (which contains delta globins) and frequently also HbF (which contains gamma). The rise in HbA2 is reliable enough to diagnose beta thalassemia trait and in those with risk factors, an HbA2 above 3.5% is enough to diagnose beta thalassemia trait.

• #4 Symptoms & Diagnosis | Northern California Comprehensive Thalassemia Center

  https://thalassemia.ucsf.edu/thalassemia-information/symptoms-diagnosis

  In most states, thalassemia is detected during newborn screening. Therefore, patients are assessed before becoming symptomatic. […] Prior to consideration of transfusion therapy, it is critical to confirm the patients diagnosis. In addition to complete blood count (CBC), hemoglobin electrophoresis is the first diagnostic test. Fractions of hemoglobin A, A2, F, H, E, and other variants are measured. Hemoglobin analysis by hemoglobin electrophoresis or high performance liquid chromatography is used. Mutations may overlap on the screening test, resulting in incorrect diagnosis or a false negative. Therefore, genetic analysis for both betathalassemia and alpha-thalassemia mutations are necessary. In addition, parents and siblings should be screened. […] Patients with thalassemia intermedia may have exaggerated anemia due to temporary nutritional deficiencies or infectious complications. It is important to complete a detailed medical history concerning factors that may temporarily lower hemoglobin, including viral illness, marrow-suppressing medication, or exposure to environmental factors such as lead. Nutritional deficiencies in folic acid or iron may exaggerate anemia. Correcting these deficiencies may raise the hemoglobin level enough to obviate the need for transfusion. […] Measurements should be taken of the G6PD level, serum ferritin, total iron-binding capacity, serum iron, and red cell folate. A brief therapeutic trial of iron (6 mg/kg/day for four to eight weeks) and folic acid (1 mg/day) are indicated if significant laboratory deficiencies are found.

• #4 An Integrative Medicine Approach to Thalassemia: Diagnosis, Testing, and Treatment

  https://www.rupahealth.com/post/an-integrative-medicine-approach-to-thalassemia-diagnosis-testing-and-treatment

  Thalassemia is an inherited blood disorder, meaning a gene change is passed on from at least one parent. The type and number of inherited gene changes determine the type and severity of the condition. […] A complete blood count (CBC) may be ordered as part of routine blood work and show signs of thalassemia incidentally or is the first test ordered in a suspected case of thalassemia. A CBC with low hemoglobin and MCV (indicating microcytic anemia) suggests thalassemia. […] A peripheral blood smear, a microscopic analysis of RBCs, is virtually diagnostic of thalassemia and will report findings of many small, pale RBCs varying in size and shape. […] Hemoglobin electrophoresis evaluates the type and amounts of hemoglobin present in RBCs. Characteristic patterns of hemoglobin configurations can help identify the various types of thalassemia.

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