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
Not true about hereditary spherocytosis - 
Select and explain. 
A. Defect in ankyrin, B. Decreased MCV, C. Decreased MCHC, D. Reticulocytosis
C: Decreased MCHC
Answer: C: Decreased MCHC 
Explanation: In Hereditary spherocytosis the MCHC(Mean corpuscular Hb Conc) is often increased above 35g/dL.(N=33-35 g/dL) Ref:Postgraduate Hematology by Victor Hoffbrand, pg 131 Ref Robbins 9/e pg 418