Herpes Simplex Virus Antibody, Fluid (IgG)
This test measures antibodies in your blood that your immune system produces to fight herpes simplex virus (HSV). These antibodies help your body recognize and defend against the virus if it tries to infect you again.
["This test helps determine if you’ve ever been exposed to HSV or if your body is making antibodies to protect against future infections."]
Key facts at a glance
- LOINC
- 44504-9
- Short code
- HSV Ab Fld Ql IF
- Synonyms
- HSV Ab Fld Ql IF
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- 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 Does This Test Measure?
The test detects IgG antibodies specific to HSV, which are typically present in your blood if you’ve had a past infection. These antibodies develop over time after initial exposure and can remain in your system for years. This test does not directly measure the virus itself but indicates your immune response to it.
Why Might You Need This Test?
Doctors may order this test if you have symptoms like sores, pain, or unusual rashes that could be caused by HSV, especially if you’ve had similar issues before. It can also be used to confirm past exposure in people with no current symptoms or to monitor immune response in certain medical 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 a blood sample. The process is quick and usually causes only minor discomfort.
What to Expect After the Test
After the blood is drawn, you may feel a small bruise or slight pain at the site, which usually goes away quickly. You can resume your normal activities immediately.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results (detecting HSV antibodies) suggest past exposure to HSV, meaning you’ve likely had the virus at some point. This doesn’t mean you’re currently infected, but it indicates your body has developed immunity. Negative results mean no detectable antibodies, which could mean you’ve never been exposed or the test was taken too early after exposure. This test is important for managing conditions like recurrent herpes outbreaks or for people at higher risk of infection.
Short name
IgG HSV Antibody
Frequently asked questions
How long does it take to get results from this test?
Can I have this test if I’m currently experiencing HSV symptoms?
What does it mean if my test is positive for HSV antibodies?
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