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HIV-1 Antibody Test (Qualitative) – Plasma/Serum

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

This test checks for antibodies to the human immunodeficiency virus (HIV) in your blood or plasma. Antibodies develop after exposure to HIV, helping the body fight the virus.

Quick summary

["Detects potential HIV exposure by identifying antibodies to the virus."]

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

Key facts at a glance

LOINC
35444-9
Short code
HIV1 p55 Ab Sal Ql IB
Synonyms
HIV1 p55 Ab Sal Ql IB
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ib
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

This test detects HIV-1 antibodies using a qualitative immunoassay method. Antibodies are proteins your immune system produces in response to HIV. If present, they indicate past or possible current infection. The test does not directly measure HIV itself but serves as an early indicator of exposure.

How the Test Works

A small blood sample is drawn, and the plasma or serum is tested for HIV-1 antibodies. The immunoassay detects these antibodies by binding to them, triggering a visible reaction (often color change) that confirms or excludes infection status.

Why It’s Done

Healthcare providers use this test to screen for HIV, especially in high-risk groups or as part of routine check-ups. It’s often the first step in diagnosing HIV infection, though confirmatory tests may follow for accuracy.

What to Expect Before the Test

No special preparation is needed. You may have a slight bruise or discomfort at the needle site, but this usually fades quickly. Avoid alcohol or heavy meals before the draw if instructed by your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HIV Antibody Screen (Qualitative)

Frequently asked questions

Can I get HIV from this test?
No, this test cannot transmit HIV. It only detects antibodies, not the virus itself. Blood samples are handled with strict safety protocols to prevent exposure.
What does a positive result mean?
A positive result suggests possible HIV infection. Further confirmatory tests (like Western Blot or PCR) are needed to confirm diagnosis. Follow-up with a healthcare provider is essential for next steps, including treatment and support.
How soon can I get results?
Results are typically available within 1–3 business days. If you’re at high risk for HIV, your provider may schedule results sooner. Always discuss results with your healthcare team.
  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