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Herpes Simplex Virus Type 2 Antibody, Serologic Test (Qualitative or Quantitative)

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

This test detects antibodies to the herpes simplex virus type 2 (HSV-2), which causes genital herpes. It helps determine if you’ve been exposed to the virus or if you have an active infection.

Quick summary

["This test checks for past or current exposure to genital herpes caused by HSV-2."]

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

Key facts at a glance

LOINC
48784-3
Short code
HSV2 Ab Ser Ql IA
Synonyms
HSV2 Ab Ser Ql IA
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
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 order this test if you have symptoms of genital herpes, such as sores, itching, or unusual discharge, or if you have a history of genital herpes. It can also be used to confirm a diagnosis in people with suspected herpes who test negative for other causes of genital sores.

What to Expect Before the Test

No special preparation is needed. You may have a blood sample drawn from a vein in your arm, or a sample of saliva may be collected. If a blood test is used, you might feel a small pinch when the needle is inserted, but the procedure is quick and usually not painful.

What the Test Results Mean

Positive results indicate the presence of HSV-2 antibodies, suggesting past exposure or infection. Negative results mean the test did not detect antibodies, but this does not rule out infection if symptoms are present. Repeat testing may be needed for confirmation.

Common Uses and Limitations

This test is primarily used for diagnosing herpes infections but cannot distinguish between past infection and current symptoms. It does not confirm active herpes outbreaks or provide information about viral load.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Detecting HSV-2 antibodies is crucial for managing and preventing the spread of genital herpes. It helps healthcare providers diagnose the condition, counsel patients about risk factors, and recommend appropriate treatments or preventive measures, such as antiviral medications or condoms.

Short name

HSV-2 Antibody Test

Frequently asked questions

What does a positive test result mean?
A positive result means your body has produced antibodies to HSV-2, indicating past exposure to the virus. This does not necessarily mean you have an active infection at the time of testing, but it confirms you have been exposed to the virus at some point.
Can this test detect an active herpes outbreak?
No, this test only detects antibodies, which develop after the virus has been in your body for some time. For diagnosing an active outbreak, your healthcare provider may use other tests or clinical evaluation.
Is this test the same as a PCR test for herpes?
No, this test looks for antibodies, while a PCR test detects the actual virus in a sample (such as fluid from sores). PCR tests are used to confirm active herpes infections, whereas antibody tests assess past exposure.
  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