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Frequently asked question: Which blood tests can be used to track the course of an HIV infection?

HIV RNA VL This blood test enables you to determine the number of virus particles in your blood (viral load). It allows you to see which phase of the HIV infection you are in. This is necessary in order to know whether it is time to start taking medication. The test also shows whether the medication is successful.
Number of CD4 cells The fewer CD4 cells in your blood, the worse shape your immune system is in. This also allows you to see which phase of the HIV infection you are in.

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