Human Immunodeficiency Virus (HIV) Antibody Screening, Serum/Plasma
This test detects antibodies to the human immunodeficiency virus (HIV), which your body produces in response to infection. It helps determine if you’ve been exposed to HIV.
["This screening helps identify potential HIV exposure early for further evaluation and care."]
Key facts at a glance
- LOINC
- 31536-6
- Short code
- Hu IgG Ser-aCnc
- Synonyms
- Hu IgG Ser-aCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- 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 antibodies against HIV, a virus that attacks the immune system. These antibodies develop after exposure and can remain in your blood for years. The presence of these antibodies suggests past or current infection, though they may not always confirm active HIV infection alone.
Why It’s Done
Doctors may order this test if you have risk factors for HIV (e.g., unprotected sex, shared needles, or exposure to infected blood), symptoms of HIV-related illness, or if you’re part of a group at higher risk. It’s also used as part of routine screening in certain settings.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample, usually from a vein in your arm. The process is quick and typically painless, though you may feel a slight pinch. If you’re nervous, let your healthcare provider know.
What to Expect After the Test
Most people experience minimal discomfort after the blood draw. Apply gentle pressure to the site to stop any bleeding. Avoid vigorous activity for a few hours. If you have questions about results, discuss them with your provider.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results indicate the presence of HIV antibodies, which may mean past or current infection. However, false positives can occur, so further testing (like a confirmatory HIV antibody test or viral load test) is needed to confirm diagnosis. Early detection allows for timely treatment and management to improve health outcomes.
Short name
HIV Antibody Screen
Frequently asked questions
How soon can I get my results?
What does a positive result mean?
Can I still have sex or share needles if my test is positive?
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