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
All are true about anemia of chronic diseases, except 
Select and explain. 
A. Decreased serum iron, B. Decreased ferritin, C. Decreased TIBC, D. Increased bone marrow iron
B: Decreased ferritin
Answer: B: Decreased ferritin 
Explanation: Ref Harrison 19 th ed pg 628 AI is normo- cytic and normochromic. The iron values usually make the differential diagnosis clear, as the ferritin level is normal or increased and the percent transferrin saturation and TIBC are typically below normal.