HIV DUO Testing (28 Day HIV Testing)

This HIV test can detect the HIV virus 28 days after infection and is called a "DUO" test because it combines an antibody test for the HIV 1 & 2 strains of the virus with an antigen test for the p24 antigen. An antigen is a foreign substance that triggers the body's creation of antibodies. With HIV, the p24 protein is the antigen that most commonly triggers an antibody response. During the first few weeks after someone becomes infected with HIV, p24 is produced rapidly and is detectable in the blood. Because the p24 test can detect HIV infection before the HIV antibody test can, it is used for diagnosing HIV early in the course of infection. Coupled with an antibody test, the HIV p24 antigen is very accurate in determining early on whether an individual has been infected with HIV. The HIV DUO test is extremely accurate at 28 days and is now the test recommended by the 2008 UK Guidelines on HIV testing.

Our doctors send blood samples to our laboratory and the results are usually available in anywhere from a few hours to 2 days. The cost of this HIV test is £120. The HIV DUO test, including p24 antigen, is considered 99.8% accurate.

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