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Herpes Simplex Virus Antibody, Qualitative (IgG)

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

This test checks for antibodies to the herpes simplex virus (HSV), which can help determine if you’ve ever been exposed to the virus or if your immune system is responding to it.

Quick summary

["This test helps assess past exposure to HSV, not whether you currently have an active infection."]

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

Key facts at a glance

LOINC
44515-5
Short code
HSV Ag Cvx Ql IA
Synonyms
HSV Ag Cvx 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 Might Be Ordered

Your healthcare provider may order this test if you have symptoms like sores, fever, or unusual rashes that could be related to HSV, or if you’re investigating recurrent infections. It may also be used in certain high-risk groups, such as pregnant individuals or those with weakened immune systems, to monitor exposure.

What to Expect Before the Test

No special preparation is needed. You’ll likely have a small blood sample drawn from a vein in your arm. If you’re concerned about discomfort, let your healthcare provider know.

What the Results Mean

A positive result means your body has produced antibodies against HSV, indicating past exposure. A negative result suggests no detectable antibodies, meaning you may not have been exposed or the test may not have detected it yet. Results are qualitative, so they’re not used to measure antibody levels.

When You Might Need Follow-Up

If your test is positive, your provider may recommend further testing (like HSV culture or PCR) to determine if you have an active infection. If you’re pregnant or at high risk, they may also monitor for complications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HSV IgG Antibody

Frequently asked questions

What does a positive result mean?
A positive result indicates your immune system has likely encountered HSV in the past, but it does not confirm an active infection. This test is often used as part of a broader evaluation, especially in cases of recurrent symptoms or high-risk scenarios.
Can this test detect an active infection?
No, this test only detects antibodies, which appear after your body has responded to past exposure. For diagnosing an active infection, other tests like viral culture or PCR are typically used.
How long does it take to get results?
Results are usually available within 1 to 3 business days, depending on your lab’s processing time.
  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