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Human Immunodeficiency Virus Type 2 Antibody Screening by Serological Titration

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

This test detects antibodies to the Human Immunodeficiency Virus (HIV) type 2, which can help identify if your body has been exposed to the virus. It is part of HIV screening to check for infection.

Quick summary

["This test helps determine if you may have been exposed to HIV-2, an important step in understanding your health status and next steps."]

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

Key facts at a glance

LOINC
24295-8
Short code
HPIV2 Ab sp2 Titr Ser
Synonyms
HPIV2 Ab sp2 Titr Ser
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms or risk factors for HIV-2 infection, such as unprotected sexual contact, shared needles, or living in regions where HIV-2 is more common. It may also be part of routine screening in certain populations.

How the Test Works

The test uses a blood sample to detect antibodies produced by your immune system in response to HIV-2. If antibodies are present, it suggests past or current infection. This screening is typically qualitative, meaning it provides a yes/no result rather than precise levels.

Sample Collection and Preparation

A small blood sample is drawn from your arm, usually by a healthcare professional. The blood is processed to separate serum (liquid part of blood) for testing.

Test Limitations and Considerations

This test is designed to screen for antibodies and may not detect early infection. False negatives are possible in the first few weeks after exposure. If results are positive, further confirmatory testing may be needed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive results indicate the presence of HIV-2 antibodies, which may mean you have been infected. It is crucial to follow up with additional testing and consult a healthcare provider for guidance on next steps, including treatment options and managing your health. Early diagnosis and treatment can significantly improve outcomes.

Short name

HIV-2 Antibody Screening

Frequently asked questions

What Does a Positive or Negative Result Mean?
A negative result means your blood sample did not detect HIV-2 antibodies at this time. However, it’s possible you were exposed recently and the body hasn’t yet produced detectable antibodies. If you suspect exposure, discuss retesting with your provider.
What If My Results Are Positive?
A positive result suggests possible HIV-2 infection. Your healthcare provider will likely order additional confirmatory tests to confirm the diagnosis. They will also guide you on next steps, which may include starting treatment, monitoring your health, and connecting you with support services.
How Often Should I Get Tested?
The frequency of testing depends on your risk factors. If you have ongoing risk behaviors (e.g., unprotected sex, shared needles), your provider may recommend regular testing, often every 3–6 months. If you’re asymptomatic and low-risk, testing may be less frequent, but it’s important to discuss your personal risk with your healthcare provider.
  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