This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Medicine
Best test for assessment of iron status is - 
Select and explain. 
A. Transferrin, B. Ferritin, C. Serum iron, D. Hemoglobin
B: Ferritin
Answer: B: Ferritin 
Explanation: <p>In the development of anemia , firstly storage iron(ferritin) depletion occurs during which iron reserves are lost without compromise of the iron supply for erythropoiesis. So it is the best test for assessment of iron status .</p><p>Reference :Harsh mohan textbook of pathology sixth edition pg no 299 </p>