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CD4:CD8 Ratio Profile Blood Test

HIV disease progression & treatment monitoring
Sample Report
Specimen Types: Blood,Hair


CD4:CD8 Ratio Profile Blood Test

The CD4:CD8 Ratio Profile test is typically used in to monitor disease progression in people who have been diagnosed with HIV (Human Immunodeficiency Virus).  HIV attacks the immune system making people more susceptible to infections and other viruses.  In time, HIV may lead to the development of AIDS.  Normally, this test will be ordered regularly to help monitor how much damage the virus is doing to their immune system or to see how well a person is responding to treatment.

CD4 cells are white blood cells called lymphocytes which are targeted by the HIV virus.  The CD4:CD8 Ratio test measures these and other lymphocytes to gauge the status of a person’s immune system.  This test includes:

  • Percentage CD4+
  • Absolute CD4+
  • Percentage CD8+
  • Absolute CD8+
  • CD4:CD8 Ratio
  • Complete Blood Count (CBC)

A CD4:CD8 Ratio is often ordered with a viral load test such as the HIV RNA by PCR test.  It is always best to confer with a doctor to determine the best schedule for the ordering of this test.    

Turnaround time for the CD4:CD8 Ratio Profile is typically 1-3 business days.

Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.


This HIV testing has no fasting requirements.

Note: To preserve cellular viability, specimen should be collected at the lab patient service center so it will arrive in the testing laboratory within 48 hours of collection.  Please call the lab patient service center to discuss if there is a preferred day (s) for this collection in your region.



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