Top of the page
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.
Go to https://www.healthwise.net/patientEd
Enter A519 in the search box to learn more about "Complete Blood Count (CBC): About Your Child's Test".
Current as of: December 9, 2019
Author: Healthwise Staff
Medical Review:Adam Husney MD - Family Medicine & Martin J. Gabica MD - Family Medicine
Care instructions adapted under license by your healthcare professional. If you have questions about a medical condition or this instruction, always ask your healthcare professional. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.
©2006-2020 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.