Herpes Simplex Virus Type 1 Antibody, IgG (Serum/Plasma) – Qualitative Detection via Probe-Based Assay
This test checks for the presence of antibodies against Herpes Simplex Virus Type 1 (HSV-1) in your blood. Antibodies indicate your immune system has encountered HSV-1 before, which may suggest past infection.
["Knowing your HSV-1 antibody status can help guide discussions about infection risk, recurrence, or preventive measures with your healthcare provider."]
Key facts at a glance
- LOINC
- 90452-4
- Short code
- HSV1 DNA Upper resp Ql NAA+probe
- Synonyms
- HSV1 DNA Upper resp Ql NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- 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
What This Test Measures
The test detects IgG antibodies specific to HSV-1, which your body produces after exposure to the virus. These antibodies remain in your system long after the initial infection has resolved, serving as a marker of past infection rather than active disease.
Why It Matters for You
While this test doesn’t confirm whether you currently have an active HSV-1 infection, it can help determine if you’ve been exposed to the virus. This information may be useful if you’re concerned about transmission to others or managing symptoms related to past exposure.
How the Test Works
The test uses a probe-based immunoassay to detect IgG antibodies in your serum or plasma. This method is sensitive and designed to identify low levels of antibodies that may indicate prior infection, even if symptoms were mild or absent.
What to Expect Before the Test
No special preparation is needed for this test. You may have a blood draw at your doctor’s office or lab. If you’re taking blood thinners or have a history of bleeding disorders, let your provider know beforehand.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results suggest you’ve had HSV-1 at some point in your life, meaning you may carry the virus asymptomatically or experience recurrent outbreaks. Negative results indicate no detectable antibodies, which could mean you’ve never been exposed or the test was taken too early after exposure. This information is often used in conjunction with clinical history and symptoms to assess risk or guide preventive counseling.
Short name
IgG Antibody to HSV-1 (Qualitative)
Frequently asked questions
Can this test tell me if I currently have an active HSV-1 infection?
What does it mean if my test is positive for HSV-1 antibodies?
How long after exposure might I need to wait for this test to show a positive result?
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