Medical Term: A2, Hemoglobin | Hemoglobin A2 defined
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What is A2, Hemoglobin | Hemoglobin A2?
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Term Definition: An adult hemoglobin component normally present in hemolysates from human erythrocytes in concentrations of about 3%. The hemoglobin is composed of two alpha chains and two delta chains. The percentage of HbA2 varies in some hematologic disorders, but is about double in beta-thalassemia.