CD4+ Count Test Test Overview A CD4+ count is a blood test to see how well the immune system HIV
HIV infects CD4+ cells. The number of CD4+ cells helps determine whether other infections (opportunistic infections
Why It Is Done
CD4+ counts are done to:
Keep track of how the HIV infection is affecting your immune system. Help diagnose AIDS Check to see if you're at risk for other infections (opportunistic infections Decide whether to start treatment to prevent opportunistic infections, such as medicines to prevent Pneumocystis pneumonia. How often your CD4+ count is checked depends on your treatment, your health, and your prior CD4+ count results.
How To Prepare
In general, there's nothing you have to do before this test unless your doctor tells you to.
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How It Is Done
A health professional uses a needle to take a blood sample, usually from the arm.
Watch How It Feels
When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch.
Risks
There is very little chance of having a problem from this test. When a blood sample is taken, a small bruise may form at the site.
Results
In people who have HIV, the CD4+ count almost always goes up with treatment. Low CD4+ counts make infections more likely.
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Current as of: April 30, 2024
Current as of: April 30, 2024
