HIV Antibody Screening Test (Serum/Plasma)
This test detects antibodies to the human immunodeficiency virus (HIV), which your body produces in response to the virus. It helps determine if you’ve been exposed to HIV.
["This screening helps identify potential HIV infection early for further evaluation."]
Key facts at a glance
- LOINC
- 41144-7
- Short code
- HIV1 Ab Sal Ql
- Synonyms
- HIV1 Ab Sal Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 86701
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test looks for HIV antibodies in your blood or plasma. Antibodies are proteins your immune system makes to fight infections. If you’ve been exposed to HIV, your body may produce these antibodies within weeks to months. This test does not directly detect the virus itself but serves as an initial screening step.
Why It’s Done
Healthcare providers use this test to screen people for HIV, especially those at higher risk of infection. It may also be part of routine testing for certain populations, like sexually active adults or those with multiple sexual partners.
What to Expect Before the Test
No special preparation is needed. You’ll typically have a small needle inserted into your arm to draw blood. The process takes a few minutes, and you may feel a brief pinch. If you’re nervous, let your healthcare provider know.
What to Expect After the Test
After the blood draw, you may experience mild bruising, swelling, or discomfort at the injection site. Apply gentle pressure to the area to help reduce any swelling. Avoid vigorous activity for a short time. Results are usually available within a few days.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HIV Antibody Screen
Frequently asked questions
A positive result means your blood contains HIV antibodies, suggesting you may have been infected. However, false positives can occur, so further testing (like a confirmatory HIV antibody test) is needed. A negative result means no detectable antibodies were found at this time, but HIV could still be present if you’ve been recently exposed. Early detection is critical for managing the virus and preventing complications.
HIV antibodies may take 2 to 8 weeks (or longer) to develop after exposure. This test is designed to detect antibodies within this window, but it’s not reliable immediately after exposure. If you suspect recent exposure, additional testing may be needed sooner.
Can this test detect HIV in someone who hasn’t had symptoms yet?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy