What Are the Risks for a Person With a Low White Cell Blood Count?
Low white blood cell counts rarely occur by inherited diseases. A low WBC count generally arises from decreased production of white blood cells due to drugs, vitamin B12 deficiency or infection. The condition can also occur from peripheral destruction due to autoimmune disorders such as rheumatoid arthritis and lupus erythematosis. According to BloodBook.com, the normal white blood cell count ranges from 4,300 to 10,800 cells/µL. MayoClinic.com defines a low white blood cell count in adults as fewer than 3,500 cells/µL.