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Basophil (Close-up) Formed elements of blood

Overview Risks Results

WBC count

Alternative Names: Leukocyte count; White blood cell count Normal Values: 4,500-10,000 white blood cells/mcl (cells per microliter) Text Continues Below What abnormal results mean: Low numbers of WBCs (leukopenia) may indicate: bone marrow failure (for example, due to infection, tumor, fibrosis) presence of cytotoxic substance collagen-vascular diseases (such as lupus erythematosus) disease of the liver or spleen radiation High numbers of WBCs (leukocytosis) may indicate: infectious diseases inflammatory disease (such as rheumatoid arthritis or allergy) leukemia severe emotional or physical stress tissue damage (for example, burns) anemia This test may be performed under many conditions and in many disease states.

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