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Complete blood count (CBC)

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Complete blood count (CBC)

A complete blood count (CBC) is a blood test that gives important information about the kinds and numbers of cells in the blood, especially red blood cells, white blood cells, and platelets. A CBC helps your doctor evaluate symptoms (such as weakness, fatigue, or bruising) and diagnose conditions (such as anemia, infection, and many other disorders).

A CBC may be done to check for low red blood cells (anemia), problems with white blood cells, find an infection, find diseases of the blood, such as leukemia, or check to see if medicine or radiation treatment is working.

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This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.