In adults, hemoglobin A (Hb A) constitutes about 97%-98% of normal hemoglobin; the remainder includes about 2.5% hemoglobin A2 and about 0.5% hemoglobin F (Hb F). About 6%-7% of Hb A consists of Hb A molecules that have been partially modified by attachment of a glucose molecule to the terminal valine amino acid of the […]