Hb A 2 concentration in thalassemia trait is ?
Ans. is 'd' i.e.,> 3.5 Nestrof test o This test is being widely used in India and other developing countries in thalassemia screening programmes. o The cases which are positive, subjected to HbA2 estimation for confirmation of thalassemia trait.
1
1-2.5
2.5-3.5
> 3-5