Skip to content

HIV Antibody Screening Test (Serum/Plasma)

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 screening helps identify potential HIV exposure early for further evaluation and care."]

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

Key facts at a glance

LOINC
111468-5
Short code
HIV1 RNA Msmt SerPl
Synonyms
HIV1 RNA Msmt SerPl
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 specific antibodies in your blood that your immune system makes when it encounters HIV. These antibodies are signs that your body has been exposed to the virus, though they may not appear immediately after exposure.

How the Test Works

Your blood sample is tested using an immunoassay method to detect HIV antibodies. This method typically involves a chemical reaction that produces a visible result, indicating whether antibodies are present.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. The blood is then separated into serum or plasma for testing. This process helps isolate the fluid part of your blood where the antibodies are found.

When You Might Need This Test

Your healthcare provider may recommend this test if you have risk factors for HIV, such as unprotected sexual contact, sharing needles, or other behaviors that increase exposure risk. It may also be part of routine testing for certain groups or during specific medical evaluations.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Why This Test Matters

Short name

HIV Antibody Screen

Frequently asked questions

HIV is a serious but manageable condition when detected early. Identifying HIV allows for prompt treatment, which can help prevent disease progression and improve long-term health outcomes.
This test is not a diagnostic test for HIV infection itself but is used as a screening tool to identify potential exposure. A positive result requires further testing to confirm HIV infection.
What Does a Positive Result Mean?
A positive screening result means your blood contains antibodies to HIV, suggesting you may have been exposed. You will need additional confirmatory tests to determine if you have HIV.
What Does a Negative Result Mean?
A negative result means your blood did not contain detectable HIV antibodies at the time of testing. However, it’s important to note that HIV antibodies may take weeks to months to develop after exposure, so repeated testing may be needed if you have risk factors.
  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