![]() ![]() The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. This site complies with the HONcode standard for trustworthy health information: verify here. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability. is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M. Tell the difference between the 2 types of virus, HIV-1 and HIV-2Ī.D.A.M., Inc.Detect antibodies more accurately than screening tests.It is usually done when the screening test is positive. This test can detect the virus as early as 3 weeks after getting infected.Ī follow-up test is also called a confirmatory test. This test is usually not used by itself to screen for HIV infection.Īn antibody-antigen blood test checks for levels of both HIV antibodies and the p24 antigen. The p24 antigen test is accurate 11 days to 1 month after getting infected. When you're first infected with HIV, and before your body has a chance to make antibodies to the virus, your blood has a high level of p24. This test is also less accurate than the blood test.Īn antigen test checks your blood for an HIV antigen, called p24. Urine - This test checks for antibodies in the urine.This test is less accurate than the blood test. It is done by swabbing the gums and inside cheeks. ![]() Oral fluid - This test checks for antibodies in the cells of the mouth. ![]() A blood test is the most accurate because blood has a higher level of antibodies than other body fluids.
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