Your doctor will do a physical exam to look for an enlarged spleen.
A blood sample will be sent to a laboratory to be tested.
- Red blood cells will appear small and abnormally shaped when looked at under a microscope.
- A complete blood count (CBC) reveals anemia.
- A test called hemoglobin electrophoresis shows the presence of an abnormal form of hemoglobin.
- A test called mutational analysis can help detect alpha thalassemia.
Testing can be done before a baby is born to find out if it has thalassemia and determine how severe it may be. Tests used to diagnose thalassemia in fetuses include:
- Chorionic villus sampling. This test is usually done around the 11th week of pregnancy and involves removing a tiny piece of the placenta for evaluation.
- Amniocentesis. This test is usually done around the 16th week of pregnancy and involves taking a sample of the fluid that surrounds the fetus.
Unlike the related blood disorder sickle cell anaemia, newborn babies aren’t routinely screened for thalassaemia. There are two reasons for this:
- blood tests are usually unreliable during the first six months of life
- unlike sickle cell anaemia, thalassaemia doesn’t present an immediate threat to a baby’s life – babies born with sickle cell anaemia have a high risk of developing serious infections and need immediate treatment with antibiotics
If your baby starts to develop the symptoms of thalassaemia as they get older, a diagnosis can be confirmed using a blood test.
Assessing iron levels
If you have beta thalassaemia major, you’ll need regular blood transfusions, which will increase the level of iron in your body.
To remove the excess iron, a treatment known as chelation therapy will be used. This will prevent serious complications from excess iron occurring, such as heart or liver disease.
Treatment for thalassemia depends on which type you have and how severe it is.
Treatments for mild thalassemia
Signs and symptoms are usually mild with thalassemia minor and little, if any, treatment is needed. Occasionally, you may need a blood transfusion, particularly after surgery, after having a baby or to help manage thalassemia complications.
Some people with beta-thalassemia intermedia may need treatment for iron overload. Although most people with this condition don’t need the blood transfusions that often cause iron overload, people with beta-thalassemia intermedia may have increased digestive absorption of iron, leading to an excess of iron. An oral medication called deferasirox (Exjade) can help remove the excess iron.
Treatments for moderate to severe thalassemia
Treatments for moderate to severe thalassemia may include:
- Frequent blood transfusions. More-severe forms of thalassemia often require frequent blood transfusions, possibly every few weeks. Over time, blood transfusions cause a buildup of iron in your blood, which can damage your heart, liver and other organs. To help your body get rid of the extra iron, you may need to take medications that rid your body of extra iron.
- Stem cell transplant. Also called a bone marrow transplant, a stem cell transplant may be used to treat severe thalassemia in select cases. Prior to a stem cell transplant, you receive very high doses of drugs or radiation to destroy your diseased bone marrow. Then you receive infusions of stem cells from a compatible donor. However, because these procedures have serious risks, including death, they’re generally reserved for people with the most severe disease who have a well-matched donor available — usually a sibling.