HIV Antibody Screening and Confirmation (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 have been exposed to HIV.
["HIV antibody testing is crucial for early detection and management of the infection."]
Key facts at a glance
- LOINC
- 47029-4
- Short code
- HIV 2 Ab CSF Ql IB
- Synonyms
- HIV 2 Ab CSF Ql IB
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ib
- CPT
- 86701
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- 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 sexual contact, shared needles, or other behaviors that increase exposure. It may also be part of routine screening for certain groups, like sexually active adults or those with sexually transmitted infections (STIs).
How the Test Works
The test uses a blood sample (serum or plasma) to identify antibodies against HIV. If antibodies are present, it suggests past or current infection. The test is designed to be both sensitive and specific to minimize false results.
Test Preparation
No special preparation is needed for this test. You may have a small needle inserted into a vein in your arm to collect a blood sample. The process is quick and usually painless.
What to Expect After the Test
After the blood sample is taken, you may feel a brief pinch or discomfort. You can usually return to your normal activities immediately. Results may take a few days to a week to process, depending on the lab.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results indicate the presence of HIV antibodies, which means you have likely been infected with HIV. This is a critical step in diagnosing HIV and initiating treatment. Negative results mean no detectable antibodies were found at the time of testing, but HIV could still be present if infection occurred recently. Follow-up testing may be recommended for confirmation.
Short name
HIV Antibody Test
Frequently asked questions
How soon can I get my results?
What does a positive result mean?
Can I still have sex or engage in risky behaviors if my test is negative?
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