NEUTROPHILS ARE DECREASED BY:
Bone marrow depression due to radiation or cytotoxic drugs
Infections: Typhoid, tularemia, brucellosis, hepatitis, influenza, measles, mumps, rubella, infectious mononucleosis
Hypersplenism: hepatic disease and storage diseases
Collagen vascular diseases, such as systemic lupus erythematosus
Deficiency of folic acid or Vitamin B12
*Second Edition of Diagnostic Tests by Springhouse