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.

Wanting answers fast is normal. Many people in Denver look for same day std testing because they are waiting on news, planning a trip, or just want the worry to end.

Here is the plain version. Some tests can give results during your visit. Others go to a lab and take a few days. This guide shows you how to set up the fastest testing available, what to bring, and what each result type means.

You do not need to know in advance which tests you want. A clinician or testing counselor can help you choose based on your own situation.

Which tests can give same-day results, and which cannot

How long do std test results take? It depends on the test type, not the clinic's speed alone.

Tests that can be same day

Rapid HIV tests. The CDC describes rapid HIV tests as giving results in about 30 minutes or less, using a finger prick or a swab of the mouth, depending on the test.
Rapid syphilis tests, where a site offers them. Not every clinic does. HeyDenver lists rapid syphilis testing among its services, so ask any site whether it uses a rapid test or sends blood to a lab.

Tests that usually take longer

Chlamydia and gonorrhea. These are usually checked with a nucleic acid amplification test (NAAT), a lab test that the CDC STI Treatment Guidelines (2021) recommend. The sample goes to a lab. Results often come back in about one to three days, though the clinic sets the actual timeline.
Lab-based syphilis blood tests. These also go to a lab.
Hepatitis C tests. Timing depends on the test the site uses, so ask when you book.
Trichomoniasis, herpes and HPV testing. These depend on symptoms, the sample type and the clinic. Ask a clinician what is appropriate for you.

So a visit can be same day, but not every result will be. Plan on a mix: some answers at the visit, some in the days after.

What you need before you go

Gather these first. They make the visit smoother and faster.

A phone. Most Denver options need a call or text to book or to learn the day's location.
A photo ID and your insurance card, if you have insurance. Ask the clinic whether it needs them. Some sites offer free testing and may not.
A short list of your questions and any symptoms. Note when they started. Symptoms change which kind of visit you need.
A rough timeline of recent exposures. You do not need exact dates. Approximate timing helps a clinician explain what tests can and cannot show right now.
A safe way to receive results. Decide whether a phone call, text or patient portal works for you.
Time. Even a quick test includes check-in and counseling.

Step-by-step: how to get tested as fast as possible in Denver

Step 1: Decide what kind of visit you need

This one choice decides how fast you can be seen.

If you have no symptoms and want routine screening, a testing-only visit or a community outreach site may be the quickest path.

If you have symptoms, such as unusual discharge, sores, pain or a rash, a visit with a clinician is the better route. The Public Health Institute at Denver Health says patients with symptoms need a provider visit rather than a testing-only visit.

If you may have been exposed to HIV in the past 72 hours, call right away. The Denver Sexual Health Clinic asks people in that situation to call as soon as possible about post-exposure prophylaxis (PEP), a medicine a clinician prescribes. Do not wait for a routine appointment.

Step 2: Choose a site based on how it works

Denver has walk-in and appointment options. They are not interchangeable. Here is how they differ, using what each organization publishes. You can also compare them on the local testing list.

Option	Walk-in or appointment	What to know
Denver Health community outreach testing	Walk-in	Free, confidential testing for STIs, HIV and hepatitis C in English and Spanish at rotating community locations. Call or text 720-415-7075 for where it is. It does not provide exams or treatment.
HeyDenver (Colorado Health Network), 822 E 19th Ave	Walk-in on set days, otherwise by appointment	Lists rapid HIV and rapid syphilis testing, plus chlamydia and gonorrhea testing. Call 303-962-2880 to confirm walk-in days before you go.
Planned Parenthood of the Rocky Mountains, Park Hill Health Center, 7155 E 38th Ave	Walk-in per the CDC directory listing	Lists STD and rapid HIV testing. The listing says to contact the organization about eligibility and fees. Call (303) 321-2458.
Denver Sexual Health Clinic, 660 N. Bannock St., Pavilion L, 2nd Floor	Appointment required	Sliding fee scale. Call 303-602-3540. The best choice for symptoms, treatment or PEP.
Clinica Tepeyac, 2101 E 48th Ave	Appointment required	Sliding scale and insurance accepted per the CDC directory. Call (303) 458-5302.
STRIDE Community Health Center, Oneida, 2255 S Oneida St	Not published	Open weekdays, 7 a.m. to 5:30 p.m. Call 303-778-7433 to confirm that STI testing is offered at this location.

The honest answer on speed: walk-in outreach and HeyDenver's set days are the likeliest way to be tested within a day or two. The clinic that can do the most, including exams and treatment, requires an appointment.

Step 3: Call or text before you go

Hours and walk-in days change. A short call saves a wasted trip. Ask these questions:

Do you offer a rapid HIV test and a rapid syphilis test, or are those sent to a lab?
Can I walk in today, or do I need an appointment?
What will it cost, and is there a sliding fee or a free option?
How will I get my results, and how long should I expect to wait for each test?
If something is positive, can I get treatment here, or will you refer me?

The Denver Sexual Health Clinic is open Monday through Friday, 8 a.m. to 5 p.m., and closes 8 to 9 a.m. on the second Monday of each month. HeyDenver lists office hours of Monday through Friday, 9 a.m. to 4 p.m. Walk-in hours at Planned Parenthood Park Hill and appointment hours at Clinica Tepeyac are not published in the CDC directory, so ask when you call.

Step 4: Arrive and check in

Bring your ID and insurance card if you were told to. Staff will ask about symptoms, recent exposures and the kinds of sex you have. These are standard questions. They help the clinician pick the right samples, such as throat, rectal or genital swabs, instead of guessing.

You can answer honestly. Clinicians test people of every gender and orientation, and nothing about your answers calls for shame.

Step 5: Give your samples

Depending on the tests, this may be a urine sample, a swab you collect yourself or a clinician collects, a finger prick or a blood draw. It is usually quick.

One practical note: for urine-based chlamydia and gonorrhea tests, clinics often ask you not to urinate for a short time beforehand. Ask when you book so you can plan.

Step 6: Ask how and when you will hear back

Before you leave, confirm three things:

Which results you may get during the visit.
Which results come later, and by what method.
What number to call if you have not heard by the date you were given.

Write it down. It is easy to forget details after a stressful appointment.

Step 7: Plan for follow-up

A fast test is one step, not the whole process. Depending on your results, a clinician may talk with you about repeat testing, treatment, partner notification or prevention such as PrEP. Colorado law requires laboratories and providers to report certain infections to public health. For example, 6 CCR 1009-1 lists chlamydia and gonorrhea as reportable within 4 days. This is routine public health reporting, and it is how health departments track and respond to infections.

Understanding your std test results

Std test results come in a few forms. Here is what each generally means, in careful terms.

If a rapid test is negative

A negative result means the test did not detect the infection it looks for in that sample. The CDC explains that tests can miss a very recent infection, because the body or the test needs time to show a signal. This is called the window period, and it differs by infection and by test type. Ask the clinician how it applies to your recent exposure, and whether repeat testing makes sense for you. Only a clinician can tell you that for your situation.

If a rapid test is reactive or positive

A rapid result is usually a first step. The CDC describes follow-up testing to confirm a reactive screening test. A clinician can explain what the result means and what to do next. HIV is treatable and manageable with care from a clinician. Syphilis, chlamydia, gonorrhea and trichomoniasis are curable with treatment a clinician prescribes.

If your result is not ready yet

That is common for lab-based tests. Waiting a few days for NAAT results is a normal part of testing. It does not mean something is wrong.

If a result is unclear

Sometimes a test is inconclusive or needs repeating. A clinician can explain why and arrange the next step.

Tips for a smoother, faster visit

Go early in the week. Lab samples collected earlier in the week often return before a weekend. Ask the clinic about its own schedule.
Ask about all the sites that apply. Throat, rectal and genital infections can occur separately. HeyDenver lists three-site chlamydia and gonorrhea testing. Mention which sites apply to you so the right samples are taken.
Ask about hepatitis C too. Several Denver sites list hepatitis C testing along with STI and HIV testing.
Confirm language support. Denver Health community outreach testing is offered in English and Spanish.
Use the CDC directory. gettested.cdc.gov lets you look up testing sites by ZIP code and see what each one offers.
If you are under 18, Colorado law (C.R.S. 25-4-409) says a provider must, at a minor's request, perform an STI exam and treat if needed, and parental consent is not a prerequisite. The information is confidential, with an exception for child protection reporting.

Common mistakes to avoid

Walking in without calling. Walk-in days are limited, and a site's page may be out of date. HeyDenver's own materials list testing on set days, and the Colorado Health Network lists the site as testing by appointment, so confirm first.
Expecting every test to be same day. A rapid HIV test and a lab-based chlamydia test run on different clocks.
Going to an outreach site with symptoms. Outreach testing does not include exams or treatment. With symptoms or a known exposure, contact the Denver Sexual Health Clinic.
Waiting on a possible HIV exposure. PEP is time-sensitive. The clinic asks you to call as soon as possible if the exposure was in the past 72 hours.
Treating one negative result as permanent. A result reflects the day of the test. Ongoing exposure means testing is repeated over time. The CDC and USPSTF guidance on how often depends on age, sex partners and other factors, so ask a clinician what schedule fits you.
Not asking how results will be delivered. If you do not get a call, follow up. Silence is not a result.
Skipping follow-up after a positive result. Treatment and partner notification are what protect your health and the health of the people you care about.

What about testing at home?

Denver Public Health provides TestYourselfColorado.com, which offers free mail-in chlamydia and gonorrhea testing and an at-home HIV test once a year for Colorado residents 18 or older. It is not meant for people who are pregnant or have symptoms. Because samples are mailed, it is not a same-day option. It can still be a useful choice when you want to test privately and do not need a quick answer.

What it may cost

Costs vary by site.

Denver Health community outreach testing is listed as free.
HeyDenver's English page does not state a price. Its Spanish heading describes the STI testing as free ("gratuitas"). Confirm when you call.
At the Denver Sexual Health Clinic, patients who are uninsured or out of network pay on a sliding fee scale of $0 to $70, and the clinic says no one is denied care based on ability to pay.
Planned Parenthood Park Hill and Clinica Tepeyac accept insurance and Medicaid per the CDC directory, but they do not publish prices there. Contact them about fees and eligibility.
STRIDE does not publish testing prices on the page reviewed, so call 303-778-7433.

Putting it together: a simple plan

Decide whether you have symptoms or a recent exposure.
If there is a possible HIV exposure in the past 72 hours, call the Denver Sexual Health Clinic at 303-602-3540 now.
If you have no symptoms and want the quickest option, call or text 720-415-7075 for the next outreach testing location, or call HeyDenver at 303-962-2880 about walk-in days.
Ask which results come during the visit and which come later.
Write down the date and method for your lab results.
Follow up if you do not hear back.

Testing is a routine part of health care. Getting it done, whether the answers arrive in half an hour or a few days, is a good thing to do for yourself.

Same-Day STD Testing in Denver: Rapid Tests and Quick Results