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A complete blood count (CBC) is a blood test that gives important information about blood cells, especially red blood cells, white blood cells, and platelets.
A CBC may be done as part of a regular physical examination. There are many other reasons that a doctor may want this blood test, including to:
Your child does not need to do anything before having this test.
A health professional uses a needle to take a blood sample, usually from the arm.
A heel stick is used to get a blood sample from a baby. The baby's heel is poked, and several drops of blood are collected. Your baby may have a tiny bruise where the heel was poked.
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Current as of: September 8, 2022
Author: Healthwise Staff
Medical Review:Adam Husney MD - Family Medicine & Martin J. Gabica MD - Family Medicine
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