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HIV Antibody Screening (Qualitative) - Serum/Plasma

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

This test checks for antibodies to the human immunodeficiency virus (HIV), which your body makes in response to the virus. It helps determine if you’ve been exposed to HIV.

Quick summary

["A simple blood test to detect HIV antibodies, crucial for early detection and treatment planning."]

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

Key facts at a glance

LOINC
45256-5
Short code
HIVRXCLINICTRANSFERREDTO
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
reported
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. These antibodies are produced by your immune system after exposure to HIV. If present, they indicate past or current infection.

How the Test Works

Your blood sample is tested using an immunoassay method, which detects specific antibodies against HIV. This is a screening test and not meant to confirm HIV infection immediately.

Why It’s Done

HIV antibody screening is typically performed as part of routine health checks, especially for high-risk groups (e.g., sexually active individuals, those with multiple sexual partners, or those with HIV-risk behaviors). It can also be part of pre-exposure prophylaxis (PrEP) monitoring or post-exposure prophylaxis (PEP) follow-up.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm, and a few drops of blood will be collected into a vial or test tube. The process usually takes a few minutes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HIV Antibody Screen

Frequently asked questions

How soon can I get results?
Results are typically available within 1 to 3 business days, depending on lab processing times. Follow-up instructions will be provided by your healthcare provider.
What does a positive result mean?
A positive HIV antibody screen means your blood test detected antibodies to HIV. This does not confirm HIV infection immediately, so your healthcare provider will order additional confirmatory tests to determine if you have active HIV infection.
Can I still be at risk for HIV if my test is negative?
Yes, a negative HIV antibody screen does not guarantee you are not infected. HIV can take weeks to months to produce detectable antibodies. If you’ve been exposed to HIV, your healthcare provider may recommend additional testing or follow-up to monitor for infection.
  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