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: Pathology
In Iron deficiency anaemia, what is seen? 
Select and explain. 
A. Increased Protoporphyrin, B. Increased iron, C. Increased ferritin, D. Increased transferrin saturation
A: Increased Protoporphyrin
Answer: A: Increased Protoporphyrin 
Explanation: Since its iron def anemia there is decreased iron , ferritin , and transferin saturation . There is increased protoporphyrin levels as there is impaired maturation of Hb due to Fe deficiency. Ref: robbins 9/e pg :649