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Herpes Simplex Virus Type 1 Antibody (IgG) - Qualitative Probe

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

This test checks for the presence of antibodies against Herpes Simplex Virus Type 1 (HSV-1), a common virus that can cause cold sores and other infections.

Quick summary

["Knowing your HSV-1 antibody status helps understand past exposure and potential future risk."]

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

Key facts at a glance

LOINC
62472-6
Short code
HSV1 DNA # Amn NAA+probe
Synonyms
HSV1 DNA # Amn NAA+probe
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

What Does This Test Measure?

The test detects IgG antibodies specific to HSV-1, which develop after the body has encountered the virus. These antibodies indicate past infection, even if symptoms were mild or absent. This is a qualitative result, meaning it only tells you whether antibodies are present or not, not their exact level.

Why Might You Need This Test?

Doctors may order this test if you have symptoms of HSV-1 infection (like cold sores), if you have a weakened immune system, or if you’re being evaluated for conditions linked to HSV-1 exposure, such as certain neurological disorders.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. The sample is processed to separate serum (liquid part of blood) for testing. This test does not require fasting or special preparation.

What Are the Possible Results?

The result will be either positive (antibodies detected) or negative (antibodies not detected). A positive result suggests past exposure to HSV-1, while a negative result means no detectable antibodies at this time.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HSV-1 IgG Antibody (Qualitative)

Frequently asked questions

What does a positive result mean?
A positive result means your body has produced antibodies against HSV-1, suggesting you have been exposed to the virus at some point. This does not necessarily mean you currently have an active infection, but it does indicate past infection.
Can this test detect an active HSV-1 infection?
No, this test specifically looks for antibodies, which are produced after the virus has been cleared from your body. For detecting an active infection, other tests (like viral culture or PCR) are used.
How long after exposure might I get a positive result?
Antibodies typically develop within 2 to 3 weeks after initial infection. However, if you’ve had the virus for a long time, you may already have detectable antibodies. Results can vary based on the timing of testing relative to 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