Herpes Simplex Virus Type 1 Immunoglobulin G Antibody (Serum) – Qualitative
This test checks for the presence of antibodies to herpes simplex virus type 1 (HSV-1), a common virus that can cause cold sores and other infections.
["This test helps determine if your body has ever been exposed to HSV-1, even if you don’t currently have symptoms."]
Key facts at a glance
- LOINC
- 109774-0
- Short code
- HSV1+2 IgG Msmt CSF
- Synonyms
- HSV1+2 IgG Msmt CSF
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- 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 of HSV-1 infection (like cold sores), if you have a history of recurrent cold sores, or if you’re being evaluated for conditions linked to past viral exposure. It can also be part of screening for certain immune system conditions.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample from a vein in your arm. The test is usually done in a lab setting and results are qualitative (positive or negative).
What the Test Results Mean
A positive result means your body has produced antibodies against HSV-1, indicating past exposure. A negative result suggests no detectable antibodies, meaning either you’ve never been exposed or the antibodies have cleared from your system.
Common Reasons for Testing
This test is often used to confirm past infection rather than diagnose current symptoms. It’s not typically used to monitor active infections, as it doesn’t measure viral load or activity.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
While HSV-1 antibodies provide historical exposure confirmation, they don’t indicate the severity or risk of future outbreaks. If you have active symptoms (like cold sores), a viral culture or PCR test may be needed to guide treatment. This test is primarily useful for understanding your immune response to the virus.
Short name
HSV-1 IgG Antibody Test
Frequently asked questions
How long does it take to get results?
Can this test be used to diagnose a current HSV-1 infection?
Does a positive result mean I will definitely have cold sores?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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