Guides · Missouri · Updated October 19, 2026

Rapid STD Testing in St. Louis: Walk-In Labs, Hours, and Free City and County Clinics

Rapid STD testing in St. Louis, St. Charles, Chesterfield, and Florissant: walk-in lab addresses and hours, the free city Health Stop and county clinics, and costs.

Rapid STD testing in St. Louis today

32 private walk-in lab locations in the St. Louis area. Order online, walk in with no appointment, about 5 minutes, results in 1 to 2 days. Individual tests from $24, 10-test panel $139. Nothing billed to insurance.

Find a St. Louis Lab → See all 32 locations ↓

St. Louis is well served on both sides of the ledger: free city and county clinics, and private walk-in labs from the Central West End to St. Charles, most of them open Saturday. This page covers rapid STD testing in St. Louis with every walk-in lab in the city, St. Louis County, St. Charles County, and Jefferson County on the Missouri side with hours, plus the public clinics. Illinois locations across the river are not listed here.

The fastest option: order online, walk into a lab today

Private lab draw sites are located in the Central West End along North Kingshighway near BJC, in South City along Chippewa Street and Watson Road, in Creve Coeur along New Ballas Road near Mercy, and in Chesterfield, Ballwin, Maryland Heights, Bridgeton, Hazelwood, Florissant, St. Charles, St. Peters, O’Fallon, Eureka, Arnold, and Festus. Order online, walk in with no appointment, spend about 5 minutes, and get results in 1 to 2 days in a private account. Nothing is billed to insurance and nothing goes on your medical record.

Most sites open at 6 or 7 a.m. on weekdays, and 17 of 27 open Saturday mornings. The full list with hours is below.

City of St. Louis: Health Stop Testing and Referral Center

  • Address: 1520 Market St, Suite 1625, first floor, St. Louis, MO 63103 (downtown, in the city offices building)
  • Phone: (314) 657-1584
  • Cost: free
  • Tests: HIV, syphilis, gonorrhea, chlamydia, and hepatitis C. Does not test for herpes, HPV, or trichomoniasis.
  • Access: walk-ins and appointments, Monday through Thursday; confirm current hours by phone

St. Louis County Department of Public Health

  • Sexual Health Clinic, Pine Lawn: 4000 Jennings Station Rd, St. Louis, MO 63121. Walk-in STI prevention, testing, and treatment at no out-of-pocket cost. Phone 314-615-9736.
  • John C. Murphy Health Center: 6121 N. Hanley Rd, Berkeley, MO 63134. Weekdays 8:30 a.m. to 5 p.m. (opens at 12:30 p.m. on the first Friday of the month). Sexual health services among other clinical services. Phone 314-615-0500.

Rapid HIV results are available during public clinic visits; lab results take several days.

Urgent care in St. Louis

Urgent care centers along Manchester Road, Olive Boulevard, Lindbergh Boulevard, and in St. Charles County offer STD testing with an exam. Without insurance, plan on a visit fee of $100 to $200 plus lab charges, with results in 2 to 5 days.

Missouri notes

  • Expedited partner therapy is allowed in Missouri for chlamydia, gonorrhea, and trichomoniasis.
  • Minors can consent to their own STD testing and treatment in Missouri.
  • Syphilis has risen sharply in the St. Louis region; include it in any panel.

When to test

Chlamydia and gonorrhea at 2 weeks after exposure, HIV and syphilis at 6 weeks, herpes antibody at 12 weeks. With symptoms, test now and retest after the window.

Which tests to order

The 10-test panel ($139) covers the common infections in one visit. After one known exposure, chlamydia and gonorrhea together ($99) at two weeks and HIV plus syphilis ($49 each) at six weeks is a reasonable minimum.

Testing with a partner in St. Louis

A lot of people get tested as a couple, at the start of a relationship or before stopping condoms. It works the same way as testing alone, just twice: each of you places your own order, so each of you gets your own private results, then you can walk into the same lab together and be done in about ten minutes.

  • Same tests, same day. Ordering the same panel for both of you keeps the results easy to compare. The 10-test panel is the usual choice; add trichomoniasis if you have vaginal sex.
  • Results are individual. Neither of you can see the other's results unless you share them, which is worth agreeing on before you test.
  • If one of you tests positive, treat both of you at the same time for chlamydia, gonorrhea, or trichomoniasis, even if the other person tested negative, or the infection passes back and forth. Retest in 3 months.
  • A positive result is not proof of recent cheating. Chlamydia, trichomoniasis, herpes, and HPV can go unnoticed for months or years.

Order tests for both of you → Read the full guide to testing as a couple

Frequently asked questions

Where can I get same-day STD testing in St. Louis?

Order online and walk into any private lab draw site in the city, St. Louis County, St. Charles County, or Jefferson County the same day. No appointment, about 5 minutes, results in 1 to 2 days. The city's Health Stop downtown also takes walk-ins.

Is there free STD testing in St. Louis?

Yes. The City of St. Louis Health Stop Testing and Referral Center at 1520 Market St, Suite 1625, tests for HIV, syphilis, gonorrhea, chlamydia, and hepatitis C at no cost, by appointment or walk-in. St. Louis County's Sexual Health Clinic at 4000 Jennings Station Rd in Pine Lawn is walk-in with no out-of-pocket cost.

How much does STD testing cost in St. Louis without insurance?

Private lab tests are $24 to $59 each or $139 for a 10-test panel, paid directly with no visit fee.

Can I get STD tested on a Saturday in St. Louis?

Yes. Most St. Louis-area lab locations open Saturday mornings, 17 of 27 in the data. Order online first and confirm the hours of the location you choose.

Walk-in testing centers in St. Louis

32 private lab locations in the St. Louis area accept walk-ins with an online order. No appointment. 19 are open on Saturday. Order first, then walk in; the staff only see a lab order.

Order & pick your location →

Saint Louis 10 locations
Arnold 2 locations
Ballwin 2 locations
O Fallon 2 locations
Saint Charles 2 locations
  • 711 Veterans Mem Pkwy, Ste 103
    Saint Charles, MO 63303
    Mon–Fri 8:00 AM - 5:00 PM · Sat 8:00 AM - 12:00 PM
  • 1475 Kisker Rd Ste 140
    Saint Charles, MO 63304
    Mon 6:30 AM - 5:00 PM · Tue 6:30 AM - 5:00 PM · Wed 6:30 AM - 5:00 PM · Thu 6:30 AM - 5:00 PM · Fri 6:30 AM - 4:30 PM · Sat 7:00 AM - 12:00 PM
Saint Peters 2 locations
Washington 2 locations
Wentzville 2 locations
Bridgeton 1 location
Chesterfield 1 location
Eureka 1 location
Festus 1 location
Florissant 1 location
Hazelwood 1 location
Maryland Heights 1 location
Troy 1 location

Locations and hours are provided by the testing provider and can change. Confirm the hours shown when you order. This list covers private lab draw sites; public health clinics are listed separately above.

This page is for general information only and is not medical advice. Public clinic details are gathered from official sources and can change; confirm hours before visiting. RapidSTDTests.com is an informational referral website and may be compensated when you order testing through our links.

Other cities: Tucson · Fresno · San Diego · Wilmington, DE · Springfield, MA · Baltimore · Portland, OR · Corpus Christi

Get tested in St. Louis today

Order in minutes, walk into any of 32 local labs, and get confidential results in 1 to 2 days.

Find a Local Lab →