Skip to content

Herpes Simplex Virus Type 1 Antibody, Total IgG (Serum)

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

This test measures the presence of antibodies against Herpes Simplex Virus Type 1 (HSV-1) in your blood. Antibodies are proteins your immune system makes to help fight infections.

Quick summary

["This test helps assess past exposure to HSV-1, which can indicate immunity or past infection."]

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

Key facts at a glance

LOINC
10678-1
Short code
HSV1+2 Ag Tiss Ql ImStn
Synonyms
HSV1+2 Ag Tiss Ql ImStn
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
immune-stain
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 of herpes (such as sores, pain, or flu-like symptoms), if you have a history of HSV-1 infection, or if you’re being evaluated for conditions where HSV-1 exposure could be relevant, like certain neurological disorders or immune system conditions.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood, similar to other routine bloodwork. If you’re nervous, let your provider know so they can help make it more comfortable.

What the Test Results Mean

If your test shows **positive** results, it means your body has produced antibodies against HSV-1, suggesting you’ve likely had exposure to the virus at some point. If results are **negative**, it indicates no detectable antibodies, meaning either you’ve never been exposed or your immune system hasn’t produced detectable antibodies yet.

Common Reasons for Testing

This test is often used to diagnose past infection rather than active herpes outbreaks. It can help confirm whether someone has immunity or if they’ve had HSV-1 in the past, which may be important for certain medical decisions or evaluations.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Total HSV-1 Antibody (IgG)

Frequently asked questions

How often should I get this test?
This test is typically not repeated routinely unless there’s a specific medical reason, such as evaluating immune function, assessing exposure history, or monitoring conditions linked to HSV-1. Your provider will determine if retesting is needed based on your symptoms and medical history.
What does a positive result mean for my health?
A positive result means you’ve likely had HSV-1 at some point, but it doesn’t indicate whether you currently have an active infection. If you’re experiencing symptoms like sores or pain, you may need additional testing (like HSV-1 culture or PCR) to check for active infection.
Can this test be used to diagnose active herpes?
No, this test is for detecting past exposure. To diagnose an active herpes infection, your provider would use different tests, such as viral culture or PCR from a lesion sample, which look for the virus itself rather than antibodies.
  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