HIV-1 Antibody Screening Test (Serum/Plasma)

Why This Test Is Done

Your healthcare provider may recommend this test if you have risk factors for HIV, such as unprotected sex, shared needles, or other behaviors that increase exposure. It’s also part of routine testing for certain groups, like people with sexually transmitted infections (STIs) or those with frequent medical checkups.

What to Expect Before the Test

You’ll typically have a small blood sample drawn from a vein in your arm. It may feel like a pinch, but it usually doesn’t cause much discomfort. No special preparation is needed, but tell your provider if you’re on blood-thinning medication or have a bleeding disorder.

What Happens During the Test

The blood sample is tested for HIV antibodies using an immunoassay method. This detects proteins your body produces after infection, which can appear within weeks to months after exposure.

What the Results Mean

A positive result means your test is likely HIV-positive, and you’ll need further testing (like a confirmatory test) to confirm. A negative result means you likely don’t have HIV at this time, but you could still be at risk if exposed recently.