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What else can affect your CD4 count?

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Things other than the HIV virus can affect how high or low your CD4 count is, too.

An infection like the flu, pneumonia, or a herpes simplex virus (including cold sores) can make your CD4 count go down for a while.

Your CD4 count will go way down when you're getting chemotherapy for cancer.

To get the most accurate and helpful results for your CD4 count, try to:

  • Use the same lab each time..
  • Wait for at least 2 weeks after you've been sick or gotten a shot before you get a test.

SOURCES:

UpToDate: "Techniques and interpretation of measurement of the CD4 cell count in HIV-infected patients."

Lab Tests Online: "CD4 Count."

New Mexico AIDS InfoNet: "CD4 Cell Tests."

Reviewed by Jonathan E. Kaplan on June 23, 2019

SOURCES:

UpToDate: "Techniques and interpretation of measurement of the CD4 cell count in HIV-infected patients."

Lab Tests Online: "CD4 Count."

New Mexico AIDS InfoNet: "CD4 Cell Tests."

Reviewed by Jonathan E. Kaplan on June 23, 2019

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When should you get a CD4 count test?

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