Herpes 1 (HSV-1) Test in Washington

The Herpes 1 (HSV-1) Test is a blood test that checks for antibodies your immune system makes against herpes simplex virus type 1. It is often ordered when a person has symptoms that could be herpes, such as cold sores or genital sores, or when someone wants to know their status because a partner has HSV-1.

What it measures

HSV-1 IgG antibodies — Proteins that show a past or current infection with HSV-1.
HSV-1 IgM antibodies — Early antibodies that may appear soon after infection, but are not used alone to diagnose HSV-1.
HSV-2 IgG antibodies — Sometimes checked at the same time to see if the virus is type 2 instead of type 1.

Who it is for

A healthcare provider may order this test if you have symptoms of herpes, if your partner has HSV-1, or as part of a routine sexual health checkup.

Preparation

No fasting or special preparation is needed. You can eat and drink normally before the blood draw.

Results and what they mean

Results are usually reported as positive, negative, or equivocal (uncertain) for HSV-1 antibodies. A positive result means you have been exposed to HSV-1 at some point, but it does not tell you when or whether you have symptoms. Only a clinician can interpret your results in the context of your health history. This is general information, not medical advice.

Requesting the Herpes 1 (HSV-1) Test in Washington

Order online, choose a certified collection site in Washington, and review results through a secure portal. No referral is required, and orders are processed confidentially. Because the region is uneven, coastal metros, inland towns, and rural counties with very different access to testing — worth planning around when you book.

Frequently asked questions

Can I get HSV-1 without having symptoms?

Yes. Many people with HSV-1 never have noticeable symptoms or outbreaks, but they can still carry and potentially pass the virus to others.

Does a positive HSV-1 test mean I have genital herpes?

Not necessarily. HSV-1 is commonly associated with cold sores, but it can also cause genital sores. A blood test cannot tell you where the virus is in your body.

How long after exposure can this test detect HSV-1?

It can take several weeks for antibodies to develop. Testing too soon after exposure may give a negative result even if you are infected.

Is this test done at home or in a lab?

A blood sample is collected, usually at a clinic or lab. Some home test kits are available, but a clinician should interpret the results.

Herpes 1 (HSV-1) Test by city in Washington

All testing in Washington → Full Herpes 1 (HSV-1) Test guide →