<prompt> All are impoant laboratory features of hereditary spherocytosis, EXCEPT:Reduced MCHCNormocytic anemiaPositive pink testNormal WBC count  <response>: Laboratory diagnosis of hereditary spherocytosis The anemia is usually normocytic. Increase in mean corpuscular hemoglobin concentration MCHC- The only condition in which an increased MCHC is seen. The diagnosis is on the basis of red cell morphology and osmotic fragility, a modified version called the pink test. Ref: Harrison, E-18, P-875. 