Not true about hereditary spherocytosis -
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
Defect in ankyrin
Decreased MCV
Decreased MCHC
Reticulocytosis
Haematology