A white blood cell differential counts the different types of white blood cells in a blood sample. There are five major kinds of white blood cells. The numbers of each type of white blood cell give important information about your immune system.
The test helps to measure how the body is responding to different types of infections. It can also help measure certain allergic reactions. It can sometimes be helpful in finding the stage of leukemia or how the body is responding to chemotherapy.
In general, you don't need to prepare before having this test. Your doctor may give you some specific instructions.
A health professional takes a sample of your blood.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse call line if you are having problems. It's also a good idea to keep a list of the medicines you take. Ask your doctor when you can expect to have your test results.
Go to https://www.healthwise.net/patientEd
Enter T637 in the search box to learn more about "White Blood Cell Differential: About This Test".
Current as of: October 9, 2017
Adam Husney, MD - Family Medicine
& Martin J. Gabica, MD - Family Medicine
©2006-2018 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
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.