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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Hb A 2 concentration in thalassemia trait is ?
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The correct answer 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.