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HIV Antibody Test (Screen or Confirmation)

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

This test detects antibodies to the human immunodeficiency virus (HIV), which your body produces in response to infection. It helps determine if you have been exposed to HIV.

Quick summary

["This test screens for HIV infection, often as part of routine or risk-based testing."]

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

Key facts at a glance

LOINC
72152-2
Short code
TESTEDFORHIV
Synonyms
—
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
rhea
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

HIV antibodies are proteins your immune system makes after exposure to HIV. This test looks for these antibodies in your blood or plasma to check for past or current infection. The test may also measure HIV viral load (how much virus is in your body) in some cases, but that is not indicated by this slug alone.

How the Test Works

The test uses a blood sample (serum or plasma) to identify HIV antibodies through an immunoassay method. This method detects the presence of antibodies specific to HIV without specifying the type of virus.

Why It’s Done

Doctors may recommend this test if you have risk factors for HIV (e.g., unprotected sex, shared needles, or exposure to infected blood), symptoms of infection, or as part of routine screening (e.g., for sexually active adults). It can also be used for pre-exposure prophylaxis (PrEP) monitoring or after potential exposure.

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 healthcare provider know—they can help make it more comfortable.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

A positive result means you likely have HIV and should seek medical care immediately for treatment and support. A negative result means you are not currently infected, but you may still be at risk if you have ongoing exposure. Follow-up testing may be needed if you have risk factors or symptoms.

Short name

HIV Antibody Test

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on the lab. If you’re tested as part of a routine screening, results may be sent directly to your healthcare provider.
What does a positive result mean?
A positive result indicates you have HIV antibodies, meaning you may have been infected. This does not always mean you are currently infected—some people may have false positives or delayed antibody development. You’ll need further testing (like a viral load test) to confirm active infection and start treatment.
Can I still be at risk for HIV even if my test is negative?
Yes. HIV can take months to years to show up in antibody tests. If you’ve had recent exposure, discuss retesting with your doctor. Use protection (condoms, PrEP, etc.) to reduce risk until you’re certain you’re no longer at risk.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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