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Herpes Simplex Virus 1 Antibody, Total (IgG + IgA + IgM) by Immunoassay

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

This test measures the presence of antibodies against Herpes Simplex Virus 1 (HSV-1), which can help identify past or current infection with this common virus.

Quick summary

["This test helps determine if you’ve ever been exposed to HSV-1, which can cause cold sores or other infections."]

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

Key facts at a glance

LOINC
25838-4
Short code
HSV1 Ab Titr CSF IF
Synonyms
HSV1 Ab Titr CSF IF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
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’ve been exposed to someone with HSV-1. It can also be used to confirm a diagnosis in certain clinical situations 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. If you’re concerned about needles, let your healthcare provider know.

What the Results Mean

Positive results indicate you’ve likely been exposed to HSV-1 at some point, meaning your immune system has produced antibodies to fight it. Negative results suggest no detectable antibodies, meaning you may not have been previously exposed or the test may be too early to detect antibodies.

Common Reasons for Testing

This test is often used to diagnose past HSV-1 infection rather than active disease. It’s not typically used to monitor current symptoms or treatment progress.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

HSV-1 Antibody Total

Frequently asked questions

How often do I need this test?
There’s no routine schedule for this test. It’s usually ordered based on symptoms, exposure history, or specific clinical needs. If you’ve had a recent cold sore or suspect exposure, ask your provider when testing might be appropriate.
What if my results are positive?
A positive result means you’ve been exposed to HSV-1, but it doesn’t indicate when or how you became infected. You may have mild symptoms or none at all. If you’re concerned about transmission, discuss this with your healthcare provider.
Does this test differentiate between HSV-1 and HSV-2?
No, this test measures total HSV-1 antibodies (IgG, IgA, IgM). For HSV-2 testing, a separate test would be needed, which looks for antibodies specific to that virus.
  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