Lab test
Herpes 1 (HSV-1) Test – Oral Herpes Testing
Herpes 1 (HSV-1) Test – Oral Herpes Testing can be ordered without a referral, and this guide covers what to expect. This test detects antibodies in your blood that indicate exposure to the herpes simplex virus type 1 (HSV-1). HSV-1 is the most common cause of oral herpes, often referred to as cold sores.
What this test is
This test identifies specific antibodies produced by your immune system in response to HSV-1 infection. It helps determine if you have been exposed to the virus that typically causes oral herpes.
What it measures
- Herpes Simplex Virus 1 (HSV-1) Antibodies — indicates past or current exposure to HSV-1
What the test involves
A sample is collected through a standard blood draw from a vein in your arm. The collected blood is then sent to the laboratory for analysis.
Why it is often ordered
A clinician may order this test if you have symptoms suggestive of oral herpes or if there's a need to confirm past exposure to HSV-1. It can help differentiate between different types of herpes infections.
Preparation
No specific preparation is usually required for this test. Always follow the instructions provided by the laboratory where you will have your blood drawn.
How results are reported
Results are typically reported as either positive or negative for the presence of HSV-1 antibodies. The interpretation of results and specific reference ranges are determined by the performing laboratory.
Before you go
- Specific instructions for sample collection
- How results are reported
- Laboratory-specific reference ranges
FAQ
Frequently asked questions
Can this test detect a current infection?
This test primarily detects antibodies, which indicate past exposure. While antibody levels can rise during a new infection, it may take several weeks after exposure for antibodies to become detectable.
What is the difference between HSV-1 and HSV-2?
HSV-1 most commonly causes oral herpes (cold sores), while HSV-2 most commonly causes genital herpes. However, either type can infect either area of the body.
How accurate is this test?
The accuracy of antibody tests can vary. It is important to discuss the results with your healthcare provider, who can consider them alongside your symptoms and medical history.
How soon after exposure can this test detect HSV-1?
Antibodies may not be detectable immediately after exposure. It can take several weeks for your body to produce enough antibodies for the test to detect them.
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