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Herpes Simplex Virus Type 1 Antibody, Serum (Qualitative Immunoassay)

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

This test checks for antibodies to the herpes simplex virus type 1 (HSV-1), which can indicate past infection with this common virus.

Quick summary

["This test helps determine if your body has ever been exposed to HSV-1, often linked to cold sores or oral herpes."]

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

Key facts at a glance

LOINC
32180-2
Short code
HSV1 Ab Snv-aCnc
Synonyms
HSV1 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 Might Be Ordered

Your healthcare provider may order this test if you have symptoms like cold sores, recurrent mouth ulcers, or if you’re being evaluated for conditions where HSV-1 exposure could be relevant, such as certain neurological disorders or during pregnancy to assess risk.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample from a simple venipuncture (blood draw). Results are qualitative, meaning they indicate only whether antibodies are present or not.

What the Results Mean

A positive result means your body has produced antibodies against HSV-1, suggesting past infection. A negative result means no detectable antibodies were found, but this does not rule out current infection—other tests may be needed.

Common Reasons for Testing

This test is often used for screening, monitoring, or research purposes rather than diagnosing active infections. It’s not typically used for routine check-ups unless symptoms or risk factors are present.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HSV-1 Antibody Test

Frequently asked questions

How long do HSV-1 antibodies stay in my body?
Antibodies to HSV-1 can persist for years after infection, but their levels may fluctuate. If you have recurring symptoms, your provider may recommend retesting or additional evaluation.
Can a negative result mean I’m not infected now?
Yes, a negative result means no detectable antibodies were found, but it does not confirm you are not currently infected. HSV-1 can be active without producing antibodies, so other tests or clinical assessment may be needed.
What if I have symptoms like cold sores but the test is negative?
If you have active symptoms, your provider may recommend a different test, such as PCR (Polymerase Chain Reaction), which can detect viral DNA directly from a lesion sample. Symptoms should be evaluated by your healthcare provider for appropriate care.
  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