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What is considered an abnormal white blood count?

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Quick Answer

An abnormal total white blood cell count is any count below 4,500 or above 10,000 white blood cells per microliter of blood, states MedlinePlus. If a patient has an abnormal white blood cell count, further testing may be done.

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Full Answer

White blood cells are important immune cells that help the human body fight off pathogens, according to MedlinePlus. There are five different types of white blood cells: basophils, eosinophils, lymphocytes, monocytes and neutrophils. Low white blood cell counts may indicate a range of disorders, including cancer, bone marrow deficiency and autoimmune disease. High white blood cell counts may indicate issues including anemia, smoking and certain cancers.

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