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: Anatomy
The most suitable test to assess iron stores is 
Select and explain. 
A. Serum iron, B. Serum ferritin, C. TIBC, D. Transferrin saturation
B: Serum ferritin
Answer: B: Serum ferritin 
Explanation: Reg Harrison 19 th ed pg 627,628 The serum ferritin level is a better indicator of iron overload than the marrow iron stain. However, in addition to storage iron, the marrow iron stain provides information about the effective delivery of iron to develop- ing erythroblasts.