Hemoglobin A2

(HbA2); a heterotetramer constituting approximately 2 to 3.5% of total hemoglobin in normal adults

Description
HbA2 is formed by the pairing of &#945; and &#948; chains (&#945;2 &#948;2). The percentage is lower than normal in case of iron deficiency or &#945; thalassemia and higher than normal in most cases of heterozygous &#946; thalassemia (in &#946; thalassemia carriers); See hemoglobin