This test has been found to be 99.9% accurate in detecting the presence of HIV at 28 or more days after infection.

It can be used earlier to detect HIV but the accuracy before 28 days is not known. HIV infects certain white blood cells called CD4+ cells, which are part of the body's immune system.

Although there is no cure for HIV, early detection allows for treatment with anti-viral therapies that can help to prolong life.