Serum or plasma concentration of anti-HIV type 1 antibodies (qualitative immunoassay)

What This Test Measures

The test checks for the presence of antibodies specific to HIV-1, which your immune system produces if it has encountered the virus. These antibodies are a sign that your body has been exposed to HIV-1, though they may not always indicate an active infection.

Why It’s Done

Healthcare providers may order this test to screen for HIV-1 infection, confirm a positive initial test result, or monitor individuals who have been exposed to the virus. It is also used in certain populations where HIV screening is recommended, such as sexually active adults or those with risk factors.

Sample Collection and Preparation

A blood sample is typically collected from a vein in your arm. The blood is then processed to separate serum or plasma, which is tested for HIV antibodies using an immunoassay method. This process helps ensure accurate detection of the antibodies without interference from other substances in the blood.

Test Method and Process

This test uses an immunoassay, which detects antibodies by measuring their interaction with HIV-1 antigens. The method may involve color changes or other indicators to confirm the presence of antibodies. Results are interpreted by a healthcare professional to determine if antibodies are present.