Herpes Simplex Virus Type 1 IgG Antibody, Confirmatory (Serum/Plasma)
This test measures the presence of antibodies against Herpes Simplex Virus Type 1 (HSV-1) in your blood. Antibodies are your body’s natural defense against past or current infections.
["Helps confirm past exposure to HSV-1, which can indicate immunity or past infection."]
Key facts at a glance
- LOINC
- 41150-4
- Short code
- HSV1+2 IgM CSF Ql
- Synonyms
- HSV1+2 IgM CSF Ql
- 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
What This Test Measures
This test detects IgG antibodies specific to HSV-1, which develop after an initial infection or vaccination. IgG antibodies provide long-term immunity and are typically present for years after exposure. This test is used to confirm whether you have been exposed to HSV-1, rather than detecting an active infection.
Why It Might Be Ordered
Your healthcare provider may order this test if you have symptoms or risk factors for HSV-1, such as recurrent cold sores, or if you are being evaluated for conditions where HSV-1 exposure could be relevant (e.g., certain immune disorders, pregnancy-related concerns). It may also be used in research or clinical studies.
Sample Collection and Preparation
A blood sample is drawn from a vein in your arm. The blood is processed to separate serum or plasma, which is then tested for HSV-1 IgG antibodies using a specialized immunoassay method.
What to Expect Before the Test
No special preparation is needed. You may have some mild discomfort or bruising at the injection site, but this usually resolves quickly. Avoid alcohol before the test if possible, as it may affect blood clotting.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results indicate past exposure to HSV-1, suggesting your body has developed immunity. This does not mean you are currently infected but may be at risk of reactivation. Negative results mean you likely have not been exposed to HSV-1 in the past, though rare exceptions may occur. This test is not for diagnosing active infections but can be useful in certain clinical scenarios, such as evaluating immune function or planning preventive measures.
Short name
HSV-1 IgG Antibody Confirmation
Frequently asked questions
How long does it take to get results?
Can I get HSV-1 if I have a positive antibody test?
What does a negative antibody test mean?
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