Hemoglobin A2
- Blood health
- Iron status
Learn what Hemoglobin A2 measures and how it fits into your health data.
What is Hemoglobin A2?
Hemoglobin A2 is a minor component of adult hemoglobin, typically making up 1.8-3.5% of the total. An elevated level of Hemoglobin A2 is a key diagnostic marker for beta-thalassemia trait, as the body compensates for deficient beta-globin chain production by increasing alpha- and delta-chain production.
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