HIV Antibody and Antigen Screening Test (Serum)

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms of HIV, such as fever, fatigue, or unexplained weight loss, or if you’ve been exposed to HIV. It’s also part of routine testing for certain high-risk groups, like those with multiple sexual partners or intravenous drug use history. Some people get tested as part of regular health check-ups, especially if they’re pregnant, have HIV-related conditions, or are planning to receive blood products.

What to Expect During the Test

A small amount of blood is drawn from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause significant discomfort. The blood is then sent to a lab for testing. Results are typically available within a few days, but timing can vary depending on your healthcare provider’s process.

What the Test Results Mean

If the test is positive, it means your body has detected HIV antibodies and/or the virus itself, indicating an active infection. You’ll need follow-up testing and medical evaluation to confirm the diagnosis and start appropriate treatment. If the test is negative, it means no detectable HIV was found in this sample, but you should still discuss your risk factors with your healthcare provider to prevent future exposure.

Preparing for the Test

There’s no special preparation needed for this test. However, if you’re on blood-thinning medications or have a history of bleeding disorders, let your healthcare provider know before the test. Avoid eating or drinking anything (except water) for at least 8 hours before the blood draw if instructed, though this is less common for this specific test.