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.

Infections can pass through oral sex, and some settle in the throat. Many cause no symptoms there at all. This page answers common questions about oral STD symptoms, throat testing, and where people in Las Vegas can ask for care.

The Basics

Can you get an STD in your throat?

Yes. The CDC STI Treatment Guidelines (2021) describe several infections that can pass through oral sex and affect the throat or mouth. An STD in the throat is common enough that clinicians ask about oral sex as a routine part of a sexual history.

Which infections can affect the throat?

According to the CDC, gonorrhea, chlamydia, syphilis, herpes, HPV and HIV can all be passed through oral sex. Gonorrhea is the one most often tested for in the throat. A clinician can explain which tests fit your situation.

How common are these infections in Las Vegas?

The Nevada Office of State Epidemiology reported 525.2 chlamydia cases and 241.1 gonorrhea cases per 100,000 people in Clark County in 2023. Those figures count all body sites, not only the throat. They show that testing is a routine health step here, not a rare one.

Can oral sex pass infection in both directions?

Yes. The CDC notes that infections can pass from a mouth to genitals or the anus, and from those areas to a mouth. This is true for people of every gender and orientation.

Symptoms

What are the oral STD symptoms people notice?

When symptoms do appear, they can include a sore throat, redness, swollen glands in the neck, or sores and blisters in or around the mouth. These signs overlap with colds, strep throat and allergies. Only a clinician or a test can tell what is causing them.

Do most throat infections cause symptoms?

No. The CDC says gonorrhea and chlamydia in the throat often cause no symptoms. A person can have an STD in the throat and feel completely fine, which is why testing depends on exposure and not on how the throat feels.

Does a sore throat mean an STD?

Not by itself. Most sore throats come from viruses or other common causes. If a sore throat lasts, or follows a new partner or a recent oral exposure, a clinician can examine you and decide whether a swab makes sense.

Can syphilis or herpes show up in the mouth?

Yes. The CDC says syphilis can cause a sore, called a chancre, at the spot where the infection entered the body, including the mouth. Herpes can cause blisters or sores on the lips or inside the mouth. A clinician can examine a sore and order tests.

Can HPV affect the throat?

Yes. The CDC says HPV can infect the mouth and throat, and most infections clear on their own. The CDC also says there is no approved screening test for HPV in the throat for people with no symptoms. A clinician can talk through your personal questions.

Testing

How is a throat tested for an STD?

A clinician rubs a soft swab along the back of the throat. It takes a few seconds and the sample goes to a lab. It can cause a brief gag reflex but is not usually painful.

Does a urine or genital test cover the throat?

No. The CDC guidelines recommend testing the sites of exposure, because an infection in one body site may not show up on a test from another. A urine test checks the urinary tract and genitals only. A throat swab is a separate sample.

Does everyone need a throat test?

The CDC bases throat testing on a person's reported sexual practices. For chlamydia, the CDC says the evidence is not strong enough to recommend routine throat screening. A clinician can decide with you which sites to test.

Is HIV tested through the throat?

No. HIV is checked with a blood sample or a rapid test, not a throat swab. The Southern Nevada Health District lists rapid HIV testing at its sexual health clinic locations.

How long after an exposure should I wait to test?

The CDC lists a different window period for each infection, and the timing depends on the type of test. Do not rely on a single number from a friend or a website. Ask the clinic when to test and whether a repeat test is useful.

Should I tell the clinician about oral sex?

Yes. Clinicians cannot know to swab the throat unless you mention oral sex. They ask these questions without judgment, and your answers help them choose the right tests.

Getting Tested in Las Vegas

Where can I get tested in Las Vegas?

The Southern Nevada Health District runs sexual health clinics at 280 S. Decatur Blvd. and 2830 E. Fremont St., with a phone line at (702) 759-1700. The Arlene Cooper Community Health Center at The Center and Nevada Health Centers sites also offer STD testing. The full list of Las Vegas testing options has more detail.

Do these clinics do throat swabs?

The clinic pages do not say whether throat swabs are offered. Call before you go and ask whether they can test the throat, along with any other sites you want checked. The Southern Nevada Health District number is (702) 759-1700.

What does testing cost?

The Southern Nevada Health District says its charges are based on income and household size, and no one is turned away on the day of a visit for inability to pay. At The Center, HIV testing is free and STI screening is low cost. Nevada Health Centers lists a sliding fee program based on family size and income.

Can I walk in?

The Southern Nevada Health District says walk-ins for STI testing and treatment are available until capacity is reached. Its free Express Testing is for people without symptoms. Its pages list different hours in different places, so confirm hours before you go.

Can a teenager get tested without a parent?

Nevada Revised Statutes 129.060 lets a minor consent to examination and treatment for sexually transmitted diseases. The statute names no minimum age. Ask the clinic how it handles billing and privacy.

Is there a way to find other sites?

Yes. The CDC runs a testing locator at gettested.cdc.gov that lists sites by ZIP code. It is a useful backup if a clinic is full or closed.

Treatment and Prevention

Can a throat infection be treated?

Bacterial infections such as gonorrhea and syphilis are curable with treatment from a clinician. HIV, herpes and HPV are not curable, but they are treatable or manageable. A clinician decides what to prescribe after testing.

How can oral sex be made lower risk?

The CDC says condoms and dental dams can lower the chance of passing infections during oral sex. Regular testing helps too. The Southern Nevada Health District lists PrEP, PEP and doxy-PEP as services a clinician can discuss, and the CDC's 2024 guidance on doxy-PEP applies to certain groups.

Oral and Throat STDs: Symptoms and Testing