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.

Oral sex can pass some infections to the throat, and many of them cause no symptoms at all. That is why questions about a std in throat are common and worth answering plainly. This page gives CDC-based answers, then points to free and low-cost testing in Miami.

The basics

Can you get an STD in your throat?

Yes. The CDC says several sexually transmitted infections can pass through oral sex, including gonorrhea, chlamydia, syphilis and herpes. HPV can also affect the mouth and throat.

Which infections can affect the throat?

The ones most often discussed are gonorrhea, chlamydia, syphilis, herpes simplex virus and HPV. The CDC STI Treatment Guidelines (2021) cover each of them. The CDC describes the risk of getting HIV from oral sex as very low, but not zero.

How do these infections spread to the throat?

They spread through contact between the mouth and the genitals or anus. This is true for people of every gender and orientation. Herpes and syphilis sores can also pass through kissing when a sore is present.

Do condoms and dental dams help during oral sex?

The CDC says condoms and dental barriers can lower the risk of passing infections during oral sex. They work best when used from start to finish. They may not cover every area where skin contact happens.

Symptoms

What are the oral std symptoms people notice?

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

Why do most throat infections cause no symptoms?

The CDC notes that gonorrhea and chlamydia in the throat usually cause no symptoms. A person can have no sore throat and no discharge anywhere. This is why testing is based on the type of sex someone has had, not only on how they feel.

Does a sore throat mean I have an STD?

No. A sore throat has many common causes, and it cannot be used to say whether an infection is present. If you have had oral sex and a sore throat that lingers, a clinician can examine you and decide which tests make sense.

What do mouth sores from herpes or syphilis look like?

Herpes can cause blisters or small open sores that often come back from time to time. The CDC says the first sore of syphilis is often painless, which makes it easy to miss. Any new sore in the mouth is worth showing to a clinician.

Does HPV in the throat cause symptoms?

Usually it does not. The CDC says some types of HPV can lead to cancers of the back of the throat years later. The CDC also says there is no approved routine screening test for HPV in the throat, so ask a clinician about the HPV vaccine and what monitoring fits you.

Are symptoms different in other parts of the body?

Yes, signs elsewhere can look quite different. Our guide to STD symptoms in women and when to test explains genital and other signs. Throat infections can be present even when those signs are absent.

Throat swab testing

How is the throat tested?

For gonorrhea and chlamydia, a clinician or patient gently swabs the back of the throat. The swab goes to a lab for a nucleic acid amplification test, which the CDC guidelines describe as the standard method. The swab takes only a few seconds.

Does a urine or genital test check the throat?

No. A urine sample or genital swab only tests the area it comes from. The CDC guidelines say testing should cover the body sites exposed, so a throat infection can be missed if only urine is tested.

Who should ask about a throat swab?

Anyone who has had oral sex and wants to know their status can raise it with the clinician. The CDC guidelines link site-specific testing to the sexual practices a person reports. Being open about what you have done helps the clinician choose the right tests.

Are HIV, syphilis and herpes found with a throat swab?

Not usually. HIV and syphilis are generally found with a blood test, and herpes is typically tested by swabbing a sore. A clinician can explain which test fits which question.

How long after exposure should I test?

It depends on the infection and the test, and the CDC lists a different window period for each one. A clinician or the CDC STI Treatment Guidelines can give the window for your situation. If you are unsure, ask at the visit and testing can be repeated later.

Testing in Miami

Where can I get tested in Miami?

The Florida Department of Health in Miami-Dade County runs STI clinics at 1350 NW 14th St., Suite 350, and at 18255 Homestead Ave. Call 305-575-3800 to schedule. See the local testing list for more options, including Care Resource at 3510 Biscayne Blvd., which CDC GetTested lists as no appointment required.

Which Miami clinics offer throat swabs?

The clinic pages we reviewed do not say whether throat swabs are offered at each site. The health department lists testing for chlamydia, gonorrhea, syphilis and HIV. Call ahead and ask for a throat swab by name, and use gettested.cdc.gov to compare sites.

What do tests cost?

The health department says it offers low or no-cost testing for chlamydia, gonorrhea, syphilis and HIV, and its page does not list a fee schedule. CDC GetTested lists Care Resource's STI testing as free, and Care Resource says it offers a sliding fee scale. Our Miami testing and cost guide compares options in more detail.

Can a teenager get tested without a parent?

Florida Statute 384.30 lets a minor consent to examination and treatment for sexually transmissible diseases, with no minimum age. The statute also says a minor's STD care is confidential and may not be disclosed indirectly, such as by billing a parent. Check with the clinic about how billing is handled.

How common are these infections in Miami-Dade?

FLHealthCHARTS, a Florida Department of Health source, reports 250.5 gonorrhea cases per 100,000 people in Miami-Dade County for 2025, compared with 156.5 statewide. Its chlamydia rate for the county was 471.5 per 100,000, compared with 410.8 statewide. These figures count reported cases, not every infection.

After a result

Can a throat infection be treated?

Gonorrhea, chlamydia and syphilis are bacterial infections that are curable with treatment from a clinician. Herpes and HPV are not curable but are manageable, and HIV is treatable. A clinician decides which medicine is right for each person.

What is doxy-PEP, and is it for me?

Doxy-PEP is an antibiotic that a clinician may prescribe after sex to lower the chance of certain bacterial STIs. The CDC issued guidance on it in 2024 for specific groups of people. Our local sources do not list a Miami provider for it, so ask a clinician or the health department.

How do I tell a partner, and can they get treated?

Many people find a short, direct message works best. Under Florida Statute 384.27, as summarized by the CDC, a clinician may in some cases prescribe treatment for a partner who cannot easily be seen. The conditions are specific, so ask the clinician whether it applies.

Where can I get HIV testing at home?

The health department offers a free HIV home test kit to Miami-Dade County residents, and Care Resource offers a no-cost HIV home test for ages 14 and up who qualify. HIV home tests do not check for other infections. For gonorrhea or chlamydia in the throat, a clinic visit is needed.

Oral and Throat STDs: Symptoms and Testing