Hb A 2 concentration in thalassemia trait is ?: (A) 1, (B) 1-2.5, (C) 2.5-3.5, (D) > 3-5
Answer is D. 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.