Hemoglobin A, where A stands for adults, is the widely prevalent hemoglobin tetramer that contains two alpha and two beta subunits. The subunits have a heme group for the binding oxygen molecules, which aids in oxygen transportation from the tissues to the lungs. Deficiency of hemoglobin A results in alpha-thalassemia, beta-thalassemia, and sickle cell anemia.
All the answers published in this website are written by verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.
Is my friend's beta thalassemia screening test seem normal?
Query: Hello doctor,My cousin of 30 years old got tested for beta thalassemia screening test. He got the result as hemoglobin A2 is 2.8 %, hemoglobin F is 0.2 %, and hemoglobin C, D, and S are not detected. Is this normal or has any complications?Please guide. Read Full »
Answer: Hi, Welcome to icliniq.com. Based on your query, my opinion is as follows: The beta-thalassemia screening test appears to be normal. HbA2 levels (hemoglobin A2) are normally between 2 to 3.3% and HbF levels (fetal hemoglobin) are 0.1 to 1.2% for this age. Both are normal. The other hemoglobin typ... Read Full »