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How often should white blood cell counts be checked?

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Quick Answer

Routine complete blood cell counts, which include a white blood cell count, are often ordered during annual physical exams, according to WebMD. A white blood cell count should be conducted more regularly in patients with a medical condition that affects white blood cells, notes the University of Rochester Medical Center.

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Full Answer

Some conditions or medical treatments, such as HIV or chemotherapy, lower white blood cell counts, reports the University of Rochester Medical Center. In these at-risk patients, white blood cell counts are measured more often, as determined by a doctor. Because white blood cells are responsible for fighting infection, a low white blood cell count can make a patient more susceptible to infection.

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