HIV-1 Antibody Screening and Confirmation (Serum/Plasma)
This test detects antibodies to the human immunodeficiency virus (HIV), which your body makes in response to infection. It helps determine if you have been exposed to HIV.
["This test screens for HIV infection, which can be detected early to guide treatment and prevent progression to AIDS."]
Key facts at a glance
- LOINC
- 40732-0
- Short code
- HIV1 IgG Ser Ql IB
- Synonyms
- HIV1 IgG Ser Ql IB
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ib
- 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
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 check-ups.
How the Test Works
The test uses a blood sample (serum or plasma) to detect HIV antibodies. The process typically involves an immunoassay, which measures the presence of antibodies against HIV proteins. This is usually done in two steps: first as a screening test, then confirmed with a follow-up test if the screening result is positive.
What to Expect Before the Test
No special preparation is needed. You may have a small needle inserted to draw blood from a vein in your arm. The process usually takes a few minutes, and you can resume normal activities afterward.
What to Expect After the Test
You may feel slight discomfort or bruising at the injection site, but this is normal. If you experience excessive bleeding or signs of infection (like redness or swelling), contact your healthcare provider.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results indicate the presence of HIV antibodies, suggesting past or current infection. While antibodies may take weeks to develop after exposure, this test is highly sensitive and specific for detecting HIV. Early detection allows for timely medical intervention, which can improve long-term health outcomes and reduce the risk of HIV-related complications.
Short name
HIV Antibody Test
Frequently asked questions
How long does it take to get results?
What does a positive result mean?
Can I get HIV from a blood test?
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