Pathology RBC Development and Classification of Anemias aacc2573 The major hemoglobin present in an adult is: A HbA2 B HbA1 C HbA1c D HbA1b High-Yield Explanation - Major Hb present in adult is HbA1 - contain 2a and 2b chains. - Other Hb present in normal adult -3% HbA2 ;1% HbF