Most sensitive marker for iron deficiency is -: (A) Hemoglobin, (B) Ferritin, (C) Transferring saturation, (D) Serum iron
Answer is B. Ans. is 'b' i.e., Ferritin o Of all the serum tests for iron deficiency anemia, the serum ferritin determination is the most useful and a low serum ferritin invariably signifies iron deficiency.