Skip to content

Herpes Simplex Virus 1 Antibody, Qualitative (IgG)

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

This test detects antibodies to the herpes simplex virus type 1 (HSV-1), which can help identify past infection with this virus.

Quick summary

["This test helps determine if your body has ever been exposed to HSV-1, even if you don’t currently have symptoms."]

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

Key facts at a glance

LOINC
88678-8
Short code
HSV1 Ag Corn/Cnjt Ql IF
Synonyms
HSV1 Ag Corn/Cnjt Ql IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
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 Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like cold sores, recurrent mouth ulcers, or if you’ve been exposed to someone with HSV-1. It can also be used for screening in certain high-risk groups, such as those with weakened immune systems or for research purposes.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. The test is quick and typically done in a clinic or lab setting.

What the Results Mean

A positive result means your body has produced antibodies against HSV-1, indicating past infection. A negative result suggests no detectable antibodies, meaning you likely haven’t been infected in the past or the test was taken too soon after exposure.

Common Uses and Limitations

This test is primarily used for screening and confirming past HSV-1 exposure rather than diagnosing active infections. It doesn’t measure virus activity or severity and won’t show recent infections if the test was taken too early.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HSV-1 Antibody (IgG) Test

Frequently asked questions

What does a positive result mean?
A positive result indicates your body has likely encountered HSV-1 at some point, but it doesn’t confirm current infection. This test is often used in research, screening, or to assess immune response rather than managing active symptoms.
Can this test detect active herpes outbreaks?
No, this test does not detect active herpes outbreaks. If you suspect you’re experiencing an active infection, your provider may recommend additional testing or monitoring.
How soon after exposure might I get a positive result?
Results may take several weeks to develop after exposure, as antibodies take time to form. If you’re concerned about recent exposure, discuss timing 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