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Human Immunodeficiency Virus (HIV) Antibody Screening Test (Qualitative)

Published: August 9, 2026Updated: August 16, 2026

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.

Quick summary

["This screening test is the first step in checking for HIV infection."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

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?
This test can detect HIV antibodies within a few weeks to months after exposure, but results may not be accurate immediately after exposure due to the time it takes for antibodies to develop. If you suspect recent exposure, your healthcare provider may recommend additional testing at specific intervals.
What if my test result is positive?
A positive result means your body has detected HIV antibodies, which may indicate past exposure. Your healthcare provider will likely perform additional confirmatory tests to confirm the diagnosis. They will also guide you on next steps, including treatment options and how to manage your health.
Can this test detect HIV if I am currently infected?
This test primarily detects antibodies, not the virus itself. If you are currently infected, you may not have detectable antibodies yet, especially in the early stages of infection. Confirmatory tests are needed for a definitive diagnosis.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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