Mercy – Infectious Disease Clinic

STD/STI testing location in St. Louis, Missouri.

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.

Address: 621 S New Ballas Rd, Tower B Ste 7018B, St. Louis, MO 63141
Get directions

Phone: (314) 251-4949

Website: https://www.mercy.net/practice/mercy-clinic-infectious-disease-medical

Tests listed

Chlamydia Test
Conventional HIV Test
Gonorrhea Test
Hepatitis A Test
Hepatitis B Test
Hepatitis C Test
Herpes Test
Rapid HIV Test
Syphilis Test
TB Test

Cost and payment

Medicare Accepted, Fee, Insurance Accepted.

Hours

Monday	8:00am – 4:00pm
Tuesday	8:00am – 4:00pm
Wednesday	8:00am – 4:00pm
Thursday	8:00am – 4:00pm
Friday	8:00am – 4:00pm

Appointment required: Yes

Other services

STI treatment, PrEP (HIV prevention medicine).

Languages: English

Type: Clinic

Source: CDC NPIN listing. Last updated by source: 2026-09-06. Page built 2026-11-03.

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