Mercy – Mercy Clinic Primary Care Water Tower Pl

STD/STI testing location in Arnold, 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: 1237 Water Tower Pl, Arnold, MO 63010
Get directions

Phone: (636) 282-9899

Website: https://www.mercy.net/

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

Donations Accepted, Medicaid Accepted, Sliding Scale, 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.

Languages: English

Type: Community Based Organization

Source: CDC NPIN listing. Last updated by source: 2025-12-23. Page built 2026-11-03.

Other testing sites nearby

Jefferson County Health Department – Arnold Office

1818 Lonedell Rd, Arnold, MO 63010 · (636) 797-3837

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Mercy – Mercy Clinic Primary Care Richardson Sq

3619 Richardson Sq, Ste 170, Arnold, MO 63010 · (636) 717-6776

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Mon 8:00am – 4:30pm; Tue 8:00am – 4:30pm; Wed 8:00am – 6:30pm; Thu 8:00am – 4:30pm; Fri 8:00am – 4:00pm