HIV Viral Load

Topic Overview

Viral load is a measurement of how much HIV is present in your blood. A sample of blood is drawn and sent to a lab for testing. Results are expressed as the number of copies of the virus per millilitre of blood. Each virus is called a "copy" because HIV reproduces by making copies of itself (replicating).

The viral load test gives a more accurate picture than a CD4+ cell count of what the virus is doing in your body at the moment. (The CD4+ test measures the effect HIV is having on your immune system.) The viral load test is used to help decide when to change antiretroviral medicines.

Credits

ByHealthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Brian O'Brien, MD, FRCPC - Internal Medicine
Adam Husney, MD - Family Medicine
Peter Shalit, MD, PhD - Internal Medicine, Infectious Disease

Current as ofNovember 18, 2017

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