This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
NESTROFT test is used for screening of 
Select and explain. 
A. Thalassemia, B. Sickle cell anemia, C. PNH, D. PCH
A: Thalassemia
Answer: A: Thalassemia 
Explanation: NESTROFT (Naked eye single tube red cell osmotic fragility test) is used for screening  of thalassema.