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Herpes Simplex Virus Type 1 IgG Antibody, Fluid (Serum/Plasma)

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

This test measures the presence of antibodies against the herpes simplex virus type 1 (HSV-1) in your blood. These antibodies indicate whether your immune system has encountered HSV-1 before.

Quick summary

["This test helps determine past exposure to HSV-1, which can inform understanding of infection risk or history."]

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

Key facts at a glance

LOINC
44482-8
Short code
HSV1+2 IgG Fld Ql
Synonyms
HSV1+2 IgG Fld Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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 or a history of cold sores (fever blisters), recurrent infections, or if you’re evaluating for exposure to HSV-1 in a clinical or research setting. It can also be part of screening for immunocompromised individuals or those with specific medical conditions.

What to Expect Before the Test

No special preparation is needed. You may have blood drawn from a vein in your arm, similar to other blood tests. If you’re concerned about discomfort, let your healthcare provider know.

What the Test 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 at this time. Results alone don’t confirm current infection status; they indicate exposure history.

Common Reasons for Testing

This test is often used to assess exposure history rather than diagnose active infection. It can help clarify whether you’ve had HSV-1 before, which may influence treatment decisions or preventive measures.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgG Antibody to HSV-1

Frequently asked questions

Why might my healthcare provider ask about this test?
They may ask about it if you’ve had recurrent cold sores, if you’re evaluating for immunocompromise, or if you’re part of a study or clinical scenario where understanding past exposure to HSV-1 is important.
What does a positive result mean for my health?
A positive result means your immune system has likely encountered HSV-1 before, but it doesn’t indicate whether you currently have an active infection. It’s important to discuss symptoms and other test results with your provider.
Can I get this test at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting. Home testing options for antibody detection are not standard for this specific test.
  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