This test measures the amount of two different types of T-cells, CD4 and CD8, in the blood. A CD4/CD8 ratio is included in the test results.
T-cells are a type of white blood cell that have several functions, including helping the body fight infection. A CD4 and CD8 test measures the amount of two different types of T-cells, CD4 and CD8, in the blood. A CD4/CD8 ratio is a measure of one's immune system and is included in the results.
Your healthcare provider may order this test if you have been diagnosed with diagnosed with HIV infection and they want to:
In an adult, the blood sample is taken from a vein in the arm.
This care path's costs do not include the charge to draw blood from a vein (venipuncture). There will only be one charge to draw blood, even if multiple tests are being performed on the samples that are taken.
What should I ask my healthcare provider before having this test?
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