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STD Testing in St. Charles, Missouri

5 STD and HIV testing locations in St. Charles.

Verify with the clinic before visiting. Hours, services, fees and appointment rules change. Call ahead to confirm. This directory is for information only and is not medical advice. In an emergency, call 911.

Compass Health Network – St Charles New Town

3785 New Town Blvd, St. Charles, MO 63301 · (844) 853-8937
Sliding scaleChlamydiaGonorrheaSyphilisHIVRapid HIVHepatitis C
Mon 8:00am – 4:30pm; Tue 8:00am – 4:30pm; Wed 8:00am – 4:30pm; Thu 8:00am – 4:30pm; Fri 8:00am – 4:30pm

Mercy – Mercy Clinic Primary Care University Commons

2050 1st Capitol Dr, St. Charles, MO 63301 · (636) 866-2460
Sliding scaleChlamydiaGonorrheaSyphilisHerpesHIVRapid HIVHepatitis CHepatitis B
Mon 8:00am – 4:30pm; Tue 8:00am – 4:30pm; Wed 8:00am – 4:30pm; Thu 8:00am – 4:30pm; Fri 8:00am – 4:30pm

Mercy-GoHealth Urgent Care – Saint Charles

2031 Zumbehl Rd, St. Charles, MO 63303 · (636) 206-2690
ChlamydiaGonorrheaHerpesHepatitis CHepatitis B
Mon 8:00am – 8:00pm; Tue 8:00am – 8:00pm; Wed 8:00am – 8:00pm; Thu 8:00am – 8:00pm; Fri 8:00am – 8:00pm; Sat 9:00am – 5:00pm; Sun 9:00am – 5:00pm

Saint Charles County Department of Public Health

1650 Boones Lick Rd, Lower Level Ste B, St. Charles, MO 63301 · (636) 949-7400
ChlamydiaGonorrheaSyphilisHIVRapid HIVHepatitis CHepatitis B
Mon 8:00am – 5:00pm; Tue 8:00am – 5:00pm; Wed 8:00am – 5:00pm; Thu 8:00am – 5:00pm; Fri 8:00am – 5:00pm

Total Access Urgent Care – First Capitol Urgent Care

2138 1st Capitol Dr, St. Charles, MO 63301 · (636) 534-4498
ChlamydiaGonorrheaSyphilisHerpesHIVRapid HIVHepatitis B
Mon 8:00am – 8:00pm; Tue 8:00am – 8:00pm; Wed 8:00am – 8:00pm; Thu 8:00am – 8:00pm; Fri 8:00am – 8:00pm; Sat 8:00am – 8:00pm; Sun 8:00am – 8:00pm

Community health centers in St. Charles

These federally funded health centers (HRSA) offer primary care, usually on a sliding fee scale. Their STD testing services are not confirmed in our data. Call to confirm STD testing.

Compass Health Inc.

102 Compass Point Dr, St. Charles, MO 63301 · (636) 946-6832
Compass Health, INC · Community health center (HRSA). Call to confirm STD testing.

Compass Health, Inc.

2645 Muegge Rd, St. Charles, MO 63303 · (844) 853-8937
Compass Health, INC · Community health center (HRSA). Call to confirm STD testing.

Compass Health, Inc.

1504 Elm St, St. Charles, MO 63301 · (844) 853-8937
Compass Health, INC · Community health center (HRSA). Call to confirm STD testing.

Frequently asked questions

Where can I get STD testing in St. Charles, MO?

This page lists 5 STD/HIV testing locations in St. Charles, MO from the CDC NPIN directory, plus 3 community health centers that may offer testing. Call ahead to confirm services and hours.

Is there free STD testing in St. Charles, MO?

None of the listed locations currently say they offer free STI or HIV testing. Some list sliding-scale fees or accept Medicaid. Call to ask about low-cost options.

Do I need an appointment?

2 locations here say no appointment is required. Others may need an appointment. Call before you go.

Can I get a rapid HIV test?

4 locations here list rapid HIV testing, which usually gives results during the same visit.

Which tests should I ask for?

Common tests include chlamydia, gonorrhea, syphilis, HIV and sometimes herpes or hepatitis. Which ones you need depends on your situation, so a clinician can help you decide. CDC recommends everyone ages 13 to 64 get tested for HIV at least once.

Is STD testing confidential?

Health care providers must keep your health information private. Some public health clinics offer anonymous HIV testing. Ask the clinic about their privacy policy.

Data: CDC NPIN and HRSA. Page built 2026-11-03.