Human Immunodeficiency Virus (HIV) Antibody Screening Test (Qualitative)
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.
["This screening test is the first step in checking for HIV infection."]
Key facts at a glance
- LOINC
- 34591-8
- Short code
- HIV1 Ab Fld Ql IA
- Synonyms
- HIV1 Ab Fld Ql IA
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- 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 Does This Test Measure?
The test looks for specific antibodies in your blood or serum that your immune system makes when it encounters HIV. These antibodies are a sign that your body has been exposed to the virus, though they may take weeks to months to develop after exposure. This test does not directly detect the virus itself.
Why Is This Test Important?
Early detection of HIV is crucial for managing the infection and preventing complications. This screening test helps identify potential exposure so that you can seek medical advice and begin appropriate care if needed.
How Is the Test Performed?
A blood sample is typically taken from a vein in your arm. The sample is then tested in a lab using an immunoassay method to detect HIV antibodies. The result is usually reported as either positive or negative.
What Are the Next Steps?
If your screening test is positive, your healthcare provider will likely recommend a confirmatory test, such as a Western blot or an HIV viral load test, to confirm the diagnosis. If your result is negative, you may need follow-up testing if you have risk factors for HIV exposure.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HIV Antibody Screen (Qualitative)
Frequently asked questions
How soon after exposure can this test detect HIV?
What if my test result is positive?
Can this test detect HIV if I am currently infected?
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