Blood donations are required to be tested both for presence of antibodies to HIV and for HIV ribonucleic acid (RNA). RNA testing detects HIV at an earlier stage than HIV antibody testing.
Blood and blood products that test positive for HIV are safely discarded and are not used for transfusions. Donors whose blood tests positive for HIV are notified by the collecting agency and are deferred from further donations.
You should not donate blood to find out if you are HIV-positive,because the HIV tests used to screen donor blood are highly accurate but an althoughrarely ssomecases may bemissed . If you have been infected with HIV recently, even the most sensitive test may not show it, and you can infect others if your blood is transfused to them.
If you have engaged in high-risk sexual or drug taking behaviors, you should not donate blood. It is important, though, to learn your HIV status.