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Herpes Simplex Virus 2 Antibody, Qualitative (Serum/Plasma)

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

This test checks for antibodies to the herpes simplex virus type 2 (HSV-2), which can indicate past infection with genital herpes.

Quick summary

["Knowing your HSV-2 status helps guide treatment and manage symptoms if you have the virus."]

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

Key facts at a glance

LOINC
32181-0
Short code
HSV2 Ab Snv-aCnc
Synonyms
HSV2 Ab Snv-aCnc
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why This Test Matters

Herpes simplex virus type 2 (HSV-2) causes genital herpes, a common sexually transmitted infection. Antibodies to HSV-2 appear in your blood after infection, often within weeks to months. This test helps confirm if you’ve been exposed to the virus, even if you don’t currently have symptoms.

What to Expect During Testing

A blood sample is taken from a vein in your arm. The lab will process your serum or plasma and analyze it for HSV-2 antibodies using an immunoassay method. Results are qualitative (positive or negative) rather than quantitative.

Interpreting Your Results

A positive result means your body has detected HSV-2 antibodies, suggesting past infection. A negative result indicates no detectable antibodies at the time of testing. This doesn’t rule out recent infection—retesting may be needed if you suspect exposure.

When This Test Is Ordered

Your healthcare provider may recommend this test if you have genital sores, recurrent outbreaks, or if you’re at risk for sexually transmitted infections (STIs). It’s also used for screening in certain populations or during pregnancy.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HSV-2 Antibody Test

Frequently asked questions

What does a positive result mean for my health?
A positive result means you’ve likely had HSV-2 at some point, but it doesn’t mean you’re currently contagious. You may still experience outbreaks, and your provider can help manage symptoms and reduce risk of spreading the virus.
Can I still get tested if I have symptoms now?
Yes, but HSV-2 antibody tests are designed to detect past infection, not active outbreaks. If you have symptoms, your provider may recommend a different test (like PCR) to check for current viral activity.
How long do HSV-2 antibodies stay in my blood?
Antibodies to HSV-2 can remain in your system for years, even after the virus has gone dormant. They don’t disappear with treatment, but they don’t change over time unless you develop new infections.
  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