HIV Antibody Screening Test (Qualitative)
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 test is the first step in checking for HIV infection."]
Key facts at a glance
- LOINC
- 34592-6
- Short code
- HIV1 Ab Fld Ql IB
- Synonyms
- HIV1 Ab Fld 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
- 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 after exposure to HIV. If present, they indicate past or current infection. This test is qualitative, meaning it provides a yes/no result rather than a specific quantity.
How the Test Works
Your sample is typically taken from a blood draw. The test uses an immunoassay method (often immunoassay or chemiluminescent immunoassay) to detect HIV antibodies. The result is interpreted as either positive (indicating possible infection) or negative (no detectable antibodies).
Why It’s Done
Healthcare providers use this test to screen for HIV as part of routine check-ups, especially if you’re at higher risk of infection (e.g., unprotected sex, shared needles, or living with someone who has HIV). It’s also used in routine testing for adults aged 15–65 in many settings.
What to Expect Before the Test
No special preparation is needed. You may have a small needle inserted into your arm to draw blood. If you’re nervous, let your provider know—they can offer options like numbing cream or a different vein if needed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HIV Antibody Screen
Frequently asked questions
If the test result is positive, further testing (like a confirmatory HIV antibody test) will be needed to confirm infection. A negative result means no detectable antibodies at this time, but HIV can still be in your body. If you’re at risk, retesting may be recommended.
HIV antibodies may take weeks to develop after exposure. For the earliest possible detection, some providers recommend testing at 3 months post-exposure. If you’re unsure about timing, discuss it with your healthcare provider.
A positive result means your test detected HIV antibodies, which suggests you may have been infected. This does not confirm HIV infection alone—additional testing is required to confirm the diagnosis.
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