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White Blood Cell Count

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Also known as: WBC Count; Leukocyte Count; White Count
Formal name: White Blood Cell Count

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At a Glance

Why Get Tested?

To screen for or diagnose a variety of conditions that can affect white blood cells (WBC) such as an infection, inflammation or a disease that affects the production or survival of WBCs; to monitor treatment of a blood disorder or to monitor therapy that is known to affect WBCs

When to Get Tested?

As part of a complete blood count (CBC), when you have a routine health examination; when you have any number of signs and symptoms that may be related to a condition affecting WBCs such as infection, inflammation, or cancer; when you have a condition or are receiving treatment that is known to affect WBCs

Sample Required?

A blood sample drawn from a vein in your arm or by a fingerstick (children and adults) or heelstick (newborns)

Test Preparation Needed?