This page is general health information, not medical advice. It cannot tell you whether you have an infection. A clinician can, and the testing options on this site are a good place to start.

Herpes testing can feel confusing because there are two very different kinds of test, and they answer different questions. One looks for the virus in a sore. The other looks for antibodies in your blood.

This guide walks you through how to get a herpes test in Las Vegas, step by step. It explains which test fits which situation, what to bring, and what the results can and cannot tell you.

The short version

If you have a sore or blister, the best-timed herpes test is a swab of that sore, ideally while it is still fresh.
If you have no sores, a clinician may talk with you about a type-specific blood test. The CDC does not recommend routine blood screening for people without symptoms, so this is a conversation, not an automatic add-on.
Herpes is not curable, but it is manageable. A clinician can prescribe medicine that treats outbreaks and lowers how often they happen.
In Las Vegas, the Southern Nevada Health District and several community clinics offer STD testing on a sliding scale or at low cost.

What you need before you start

You do not need to prepare much. A few things make the visit smoother.

A photo ID. The Southern Nevada Health District asks you to bring photo ID and proof of income if you want its sliding-scale fee.
Proof of income and household size. The health district says charges are based on your income and the number of people in your household.
Insurance information, if you have it. Some clinics bill certain insurance. Others charge a self-pay rate.
A short list of what you have noticed. Write down when a sore, itch, tingling or pain began, where it is, and whether you have had something similar before.
A list of your questions. It is easy to forget them once you are in the room.
The date of any recent new partner or exposure. This helps a clinician decide which test fits and when.

Step 1: Know what herpes symptoms can look like

Many people with herpes have mild symptoms or none at all. The CDC says most people with genital herpes do not know they have it, because symptoms can be mild or mistaken for something else.

When herpes symptoms do appear, they can include:

One or more blisters or open sores on or near the genitals, anus, buttocks or thighs
Itching, tingling or burning before a sore shows up
Pain when urinating
Flu-like feelings, swollen glands or fever during a first outbreak

Herpes can also appear as cold sores on the lips or mouth. Cuts, ingrown hairs, yeast infections and other skin conditions can look similar. Only a test and a clinician can sort out the cause.

Step 2: Choose the right type of herpes test

This is the step that matters most. The CDC STI Treatment Guidelines (2021) describe two main approaches.

A swab of a sore

If you have a blister or sore, a clinician can take a swab from it. The sample is tested in a lab for the virus itself. The CDC guidelines say PCR-based tests, which detect the virus's genetic material, are the most sensitive way to test a lesion. Viral culture is an older method that the CDC notes is less sensitive, especially once a sore starts to heal.

A swab can tell you whether the virus was found in that sample. It can also tell you which type it is, HSV-1 or HSV-2. Timing matters, because a sore that has already crusted or healed gives the lab less to find.

A type-specific blood test

A blood test looks for antibodies your body makes in response to the herpes simplex virus. The CDC guidelines recommend type-specific tests, which can tell HSV-1 antibodies from HSV-2 antibodies. They do not recommend older tests that cannot tell the types apart.

A blood test cannot show where on the body the virus is, and it cannot show how long ago it was acquired. The CDC also notes that a very recent infection may not show up yet, because antibodies take time to develop.

Why the CDC does not recommend routine blood screening

The CDC guidelines do not recommend routine herpes blood screening for people with no symptoms. The U.S. Preventive Services Task Force (USPSTF) also recommends against routine serologic screening for genital herpes in adults and adolescents who have no symptoms.

The reasons are practical. Blood tests can give false positive results, especially at low antibody levels. A positive result with no history of symptoms can bring worry and questions the test cannot answer. And the test cannot say when or how the virus was acquired.

That does not mean a blood test is never useful. The CDC guidelines say type-specific blood tests can help in certain situations, such as when someone has symptoms that came and went and a swab was not possible, or when a partner has been diagnosed with genital herpes. A clinician can help you decide whether it fits your situation.

Step 3: Get seen soon if you have a sore

If you have an active sore, try to be seen as soon as you can. A swab works best on a fresh blister or sore. Waiting until it heals can make the swab less useful.

Do not put cream, ointment or anything else on the sore before the visit unless a clinician told you to. If you cannot get an appointment right away, still call and explain that you have a sore now. Many clinics prioritize this.

Step 4: Pick where to go in Las Vegas

These are the local places that list STD testing. Always call or check the clinic's page for current hours and services, and ask directly whether they can swab a sore or discuss a herpes blood test. Their pages do not spell out herpes testing specifically.

Southern Nevada Health District Sexual Health Clinic

The Southern Nevada Health District runs a Sexual Health Clinic with two Las Vegas locations. Both take walk-ins for STI testing and treatment until capacity is reached. Call (702) 759-1700.

Decatur: 280 S. Decatur Blvd., Las Vegas, NV 89107. The clinic page lists Monday, Wednesday and Thursday 7:00 AM to 6:00 PM, and Tuesday 9:00 AM to 6:00 PM.
Fremont: 2830 E. Fremont St., Las Vegas, NV 89104. The clinic page lists Tuesday 9:00 AM to 6:00 PM, and Wednesday, Thursday and Friday 7:00 AM to 6:00 PM. It asks you to arrive by 5:30 PM to allow time for processing.

The health district says fees are based on your income and household size, and that you will not be turned away because you cannot pay on the day of your visit. The health district's own pages list different hours in places, so confirm before you go.

The health district also offers free Express Testing, which it describes as a walk-in service for people who do not have symptoms. If you have a sore or other symptoms, tell the staff when you call or arrive so you are directed to the right visit. Ask whether the Express visit includes herpes testing, since the health district's page does not say.

Arlene Cooper Community Health Center at The Center

The LGBTQ Community Center of Southern Nevada runs this health center at 401 S. Maryland Parkway, Las Vegas, NV 89101. It lists HIV testing as free and STI screening as low cost, bills certain insurance, and provides treatment on site. Appointments are highly encouraged, though a limited number of walk-ins are available each day. Call 702-802-5432 for appointments. The page lists Monday to Friday 8:00 AM to 6:00 PM and Saturday 7:30 AM to 4:00 PM, but the site footer shows different hours, so check first.

Nevada Health Centers

Nevada Health Centers lists STD testing at two Las Vegas sites and offers a sliding-fee discount program based on family size and income.

Martin Luther King Family Health Center, 1799 Mount Mariah Dr., Las Vegas, NV 89106. Call 702.383.1961 or 800.787.2568.
Nellis Family Medical Center, 691 N. Nellis Blvd., Las Vegas, NV 89110. Call 702.563.4662 or 800.787.2568.

Nevada Health Centers does not publish walk-in policies for these sites on the pages we reviewed, so call ahead.

UNLV Student Health Center

UNLV students can get STI testing at the Student Health Center in the Student Recreation and Wellness Center, 4505 S. Maryland Pkwy., Las Vegas, NV 89154. Call 702-895-3370. The center serves UNLV students, and its page does not list prices.

For the full local list in one place, see the Las Vegas clinics list. For a wider look at costs and what a standard panel usually covers, read our guide to STD testing in Las Vegas. You can also use the CDC's GetTested locator to find more sites.

If you are under 18

Nevada law, NRS 129.060, says a minor may give express consent to examination and treatment for any sexually transmitted disease. The statute names no minimum age. You can ask any clinic how it handles confidentiality.

Step 5: At the visit

Here is what usually happens.

Check-in. You give your name, ID and, if you want the sliding scale, proof of income.
A private conversation. A clinician asks about symptoms, past outbreaks, partners and anything else relevant. You can say what you are comfortable sharing. Honest answers help them choose the right test.
The sample. For a sore, the clinician gently swabs the blister or sore. It may sting briefly. For a blood test, a small amount of blood is drawn from your arm.
Other tests. The clinician may suggest testing for other infections, such as chlamydia, gonorrhea, syphilis and HIV, depending on your situation. Our page on chlamydia symptoms, testing and treatment explains one of those.
Next steps. Ask how and when you will get results, and whether a follow-up visit is needed.

Step 6: Understand what the results can mean

Results depend on the test type, so here is how to read each one. Your clinician is the right person to explain what yours means for you.

Swab results

Positive: the lab found herpes virus in the sample. The result usually names the type, HSV-1 or HSV-2.
Negative: the lab did not find the virus in that sample. The CDC notes that tests on sores can miss the virus, especially when a sore is old or healing. A negative result does not always rule out herpes, so ask a clinician whether a repeat swab at the next outbreak makes sense.

Blood test results

Positive for HSV-2 antibodies: this suggests past exposure to HSV-2. The CDC guidelines advise that results at low levels may be false positives, and that a clinician may suggest a second test to confirm.
Positive for HSV-1 antibodies: this suggests past exposure to HSV-1. Many people carry HSV-1 from childhood contact, often as cold sores. The CDC notes that a blood test cannot tell whether HSV-1 is in the mouth or the genitals.
Negative: no antibodies were found at that time. A very recent infection may not show up yet, so ask a clinician whether and when to retest.

HSV-1 and HSV-2: what is the difference?

Both are forms of the herpes simplex virus. Historically, HSV-1 was associated with cold sores and HSV-2 with genital herpes. The CDC now notes that HSV-1 is an increasingly common cause of first-time genital herpes, often through oral sex.

Both types can infect the mouth or the genitals. Outbreaks tend to come back less often with genital HSV-1 than with genital HSV-2, according to the CDC guidelines. A clinician can explain what the type means for you.

Step 7: Manage outbreaks with a clinician

Herpes is not curable, but it is treatable. The CDC guidelines describe antiviral medicine that a clinician can prescribe to shorten an outbreak, ease symptoms and, when taken daily, reduce how often outbreaks happen. Your clinician decides which approach fits you, and sets any dose and schedule. Please do not use leftover medicine or someone else's prescription.

A few general points from CDC guidance may help while you are working with your clinician:

Many people have fewer and milder outbreaks over time.
Outbreaks can be linked to stress, illness or friction, but triggers vary a lot between people.
The virus can spread even when no sore is visible, though the risk is usually lower then.

Some Las Vegas clinics, including the Southern Nevada Health District and The Center, provide treatment on site. Ask whether yours can prescribe herpes medicine at the same visit.

Step 8: Think about disclosure

Telling a partner can feel daunting. It is a common experience, and plenty of people have this conversation and move forward with their relationships.

Some ideas that many people find helpful:

Choose a private, calm moment. Do not wait until the middle of intimacy.
Share the facts plainly. Herpes is common, manageable, and many people with it have no symptoms.
Mention what you are doing to lower risk. The CDC says condoms, daily antiviral medicine for the person with herpes and avoiding sex during outbreaks can reduce the chance of passing it on, though none removes the risk entirely.
Invite your partner to talk with a clinician and ask about testing.

Nevada's law on communicable diseases is NRS 441A.180. The Nevada Legislature's text describes a misdemeanor offense after a written health-authority warning, with defenses including a partner's informed consent. If you have a legal question, a clinician or the Southern Nevada Health District can point you to the right resource.

Tips and common mistakes to avoid

Waiting for a sore to heal before getting tested. A swab works best on a fresh sore. If you have one now, get seen soon.
Treating a blood test as a general check-up item. The CDC does not recommend routine blood screening for people without symptoms, so talk with a clinician about your reasons first.
Assuming a standard STD panel includes herpes. Many panels do not. Ask directly what is being tested.
Testing too soon after an exposure. Antibodies take time to show up. Ask a clinician about timing.
Reading a single result as the whole story. Low-level blood results may need confirming, and a negative swab can miss the virus.
Using home remedies on a sore before the swab. Ask a clinician first.
Skipping questions. Ask about results timing, repeat testing, and which other infections to check.

Free and low-cost options

Cost should not stop you from asking questions. The Southern Nevada Health District uses a sliding scale, The Center lists low-cost STI screening, and Nevada Health Centers has a sliding-fee program. The clinic pages do not list specific prices for herpes tests, so ask when you call.

You can also find free or low-cost sites through the CDC's gettested.cdc.gov locator. If you are unsure where to start, call the health district's Sexual Health Clinic at (702) 759-1700.

Frequently asked questions

Can a herpes test tell me how long I have had it?

No. Neither a swab nor a blood test can show when the virus was acquired, according to the CDC.

Is the swab painful?

Most people describe a brief sting or pressure. A clinician can tell you what to expect.

Does a positive result mean my partner gave it to me recently?

Not necessarily. The virus can be present for a long time without symptoms, and tests cannot date an infection. A clinician can help you think through what the result means.

Will I have outbreaks forever?

The virus stays in the body, but many people have fewer and milder outbreaks over time. Medicine from a clinician can help.

Herpes Testing in Las Vegas: Swab, Blood Tests and What the Results Mean