Pathology Misc. (W.B.C) ab2ffdfd Serious infections can occur when absolute neutrophil count decreases below? A Less than 500/ul B Less than 800/ul C Less than 1000/u D less than 2000/ul High-Yield Explanation Ans. (a) Less than 500/ul(Ref: Robbins 9th/pg 583)Serious infections are most likely when the neutrophil count falls below 500 per mm3.