Skip to main content

In-home sample collection may be available in your area for purchase through Quest Mobile™

When scheduling an appointment online, use your zip code (not city name) for best results. After entering your zip code, a Quest Mobile option will appear if it’s available for purchase in your area. Let’s check

Hide
Quest Diagnostics

Location search

Lab testing, laboratory and office locations around the world

Quest Diagnostics has headquarters in the U.S. and operations in India, Ireland, and Mexico. Our products and services are used by customers in over 130 countries. We also collaborate with many international diagnostic laboratories, hospitals and clinics to help improve human health around the world.

Search for a lab testing location to schedule an appointment

Required

Search

Looking for a facility or operation that is not a lab testing location?

US Facilities & Operations International Facilities & Operations

List

Mercy - Clayton

15945 Clayton Rd,

Ste 100

Ballwin, MO 63011

Get Directions
ds-icon--pin Created with Sketch.

1.74 mi away

Schedule Appointment 636-487-2771
Monday: 6:30 am-5:00 pm
Tuesday: 6:30 am-5:00 pm
Wednesday: 6:30 am-5:00 pm
Thursday: 6:30 am-5:00 pm
Friday: 6:30 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Wood Lake - Employer Drug Testing Not Offered

1585 Woodlake Dr,

Ste 115

Chesterfield, MO 63017

Get Directions
ds-icon--pin Created with Sketch.

3.23 mi away

Schedule Appointment 314-434-2323
Monday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Tuesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Wednesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Thursday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Friday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Chesterfield

17300 N Outer 40,

Ste 104

Chesterfield, MO 63005

Get Directions
ds-icon--pin Created with Sketch.

5.28 mi away

Schedule Appointment 636-536-6475
Monday: 6:30 am-3:30 pm
Tuesday: 6:30 am-3:30 pm
Wednesday: 6:30 am-3:30 pm
Thursday: 6:30 am-3:30 pm
Friday: 6:30 am-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Center for Performance Med

701 S New Ballas Road,

Saint Louis, MO 63141

Get Directions
ds-icon--pin Created with Sketch.

6.41 mi away

Schedule Appointment 314-913-9951
Monday: 7:00 am-4:30 pm
Tuesday: 7:00 am-4:30 pm
Wednesday: 7:00 am-4:30 pm
Thursday: 7:00 am-4:30 pm
Friday: 7:00 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Medical Tower New Ballas

621 S New Ballas Rd,

Suite 23

Saint Louis, MO 63141

Get Directions
ds-icon--pin Created with Sketch.

6.53 mi away

Schedule Appointment 314-610-5793
Monday: 7:00 am-5:00 pm
Tuesday: 7:00 am-5:00 pm
Wednesday: 7:00 am-5:00 pm
Thursday: 7:00 am-5:00 pm
Friday: 7:00 am-5:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Kirkwood - Employer Drug Testing Not Offered

463 S Kirkwood Rd,

Kirkwood, MO 63122

Get Directions
ds-icon--pin Created with Sketch.

8.15 mi away

Schedule Appointment 314-965-8763
Monday: 6:30 am-3:30 pm
Tuesday: 6:30 am-3:30 pm
Wednesday: 6:30 am-3:30 pm
Thursday: 6:30 am-3:30 pm
Friday: 6:30 am-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Eureka

98 The Legends Pkwy,

Ste 108

Eureka, MO 63025

Get Directions
ds-icon--pin Created with Sketch.

8.55 mi away

Schedule Appointment 636-751-3216
Monday: 7:30 am-4:30 pm
Tuesday: 7:30 am-4:30 pm
Wednesday: 7:30 am-4:30 pm
Thursday: 7:30 am-4:30 pm
Friday: 7:30 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Southfork Rd

12700 Southfork Rd,

Ste 150

Saint Louis, MO 63128

Get Directions
ds-icon--pin Created with Sketch.

11.58 mi away

Schedule Appointment 314-704-5144
Monday: 6:00 am-5:00 pm
Tuesday: 6:00 am-5:00 pm
Wednesday: 6:00 am-5:00 pm
Thursday: 6:00 am-5:00 pm
Friday: 6:00 am-5:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Tesson Kennerly

9950 Kennerly Rd,

Saint Louis, MO 63128

Get Directions
ds-icon--pin Created with Sketch.

11.6 mi away

Schedule Appointment 314-842-3693
Monday: 6:30 am-5:30 pm
Tuesday: 6:30 am-5:30 pm
Wednesday: 6:30 am-5:30 pm
Thursday: 6:30 am-5:30 pm
Friday: 6:30 am-5:30 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - O'Fallon

3449 Pheasant Meadow Dr,

Ste 101

O Fallon, MO 63368

Get Directions
ds-icon--pin Created with Sketch.

12.3 mi away

Schedule Appointment 636-485-9450
Monday: 6:30 am-3:00 pm
Tuesday: 6:30 am-3:00 pm
Wednesday: 6:30 am-3:00 pm
Thursday: 6:30 am-3:00 pm
Friday: 6:30 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Watson Rd

7345 Watson Rd,

Lower Level Section 2

Saint Louis, MO 63119

Get Directions
ds-icon--pin Created with Sketch.

12.45 mi away

Schedule Appointment 314-704-4998
Monday: 7:30 am-5:00 pm
Tuesday: 7:30 am-5:00 pm
Wednesday: 7:30 am-5:00 pm
Thursday: 7:30 am-5:00 pm
Friday: 7:30 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - St Peters

4101 Mexico Rd,

Ste E

Saint Peters, MO 63376

Get Directions
ds-icon--pin Created with Sketch.

12.94 mi away

Schedule Appointment 636-441-2938
Monday: 6:00 am-5:00 pm
Tuesday: 6:00 am-5:00 pm
Wednesday: 6:00 am-5:00 pm
Thursday: 6:00 am-5:00 pm
Friday: 6:00 am-5:00 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Arnold

12 Arnold Mall,

Arnold, MO 63010

Get Directions
ds-icon--pin Created with Sketch.

14.72 mi away

Schedule Appointment 636-287-1233
Monday: 7:30 am-4:00 pm
Tuesday: 7:30 am-4:00 pm
Wednesday: 7:30 am-4:00 pm
Thursday: 7:30 am-4:00 pm
Friday: 7:30 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - West Pine

40 N Kingshighway,

Saint Louis, MO 63108

Get Directions
ds-icon--pin Created with Sketch.

15.61 mi away

Schedule Appointment 314-240-2665
Monday: 7:00 am-3:30 pm
Tuesday: 7:00 am-3:30 pm
Wednesday: 7:00 am-3:30 pm
Thursday: 7:00 am-3:30 pm
Friday: 7:00 am-3:30 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Florissant

8186 N Lindbergh Blvd,

Florissant, MO 63031

Get Directions
ds-icon--pin Created with Sketch.

17.01 mi away

Schedule Appointment 314-972-1300
Monday: 6:30 am-5:00 pm
Tuesday: 6:30 am-5:00 pm
Wednesday: 6:30 am-5:00 pm
Thursday: 6:30 am-5:00 pm
Friday: 6:30 am-5:00 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Columbia IL

1000 Eleven S,

Ste 2H

Columbia, IL 62236

Get Directions
ds-icon--pin Created with Sketch.

20.26 mi away

Schedule Appointment 618-301-0623
Monday: 6:30 am-4:00 pm
Tuesday: 6:30 am-4:00 pm
Wednesday: 6:30 am-4:00 pm
Thursday: 6:30 am-4:00 pm
Friday: 6:30 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Wentzville-Employer Drug Testing Not Offered

1201 Wentzville Pkwy,

Ste 117

Wentzville, MO 63385

Get Directions
ds-icon--pin Created with Sketch.

22.39 mi away

Schedule Appointment 636-399-9216
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: Closed
Sunday: Closed
Mercy Hospital Washington - Mercy Hospital Washington

901 East Fifth St,

1St Floor

Washington, MO 63090

Get Directions
ds-icon--pin Created with Sketch.

23.94 mi away

636-239-8000
Monday: 8:00 am-5:00 pm
Tuesday: 8:00 am-5:00 pm
Wednesday: 8:00 am-5:00 pm
Thursday: 8:00 am-5:00 pm
Friday: 8:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Patients First

901 Patients First Dr,

Washington, MO 63090

Get Directions
ds-icon--pin Created with Sketch.

24.06 mi away

Schedule Appointment 636-283-1509
Monday: 6:30 am-5:00 pm
Tuesday: 6:30 am-5:00 pm
Wednesday: 6:30 am-5:00 pm
Thursday: 6:30 am-5:00 pm
Friday: 6:30 am-5:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Belleville

3030 Frank Scott Pkwy W,

Ste 5

Belleville, IL 62223

Get Directions
ds-icon--pin Created with Sketch.

27.95 mi away

Schedule Appointment 618-978-4070
Monday: 6:00 am-4:30 pm
Tuesday: 6:00 am-4:30 pm
Wednesday: 6:00 am-4:30 pm
Thursday: 6:00 am-4:30 pm
Friday: 6:00 am-4:30 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Festus

1463 US Highway 61,

Festus, MO 63028

Get Directions
ds-icon--pin Created with Sketch.

29.53 mi away

Schedule Appointment 636-931-6717
Monday: 6:30 am-5:00 pm
Tuesday: 6:30 am-5:00 pm
Wednesday: 6:30 am-5:00 pm
Thursday: 6:30 am-5:00 pm
Friday: 6:30 am-5:00 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Alton

237 E Center Dr,

Ste B

Alton, IL 62002

Get Directions
ds-icon--pin Created with Sketch.

30.15 mi away

Schedule Appointment 618-465-5877
Monday: 7:00 am-4:00 pm
Tuesday: 7:00 am-4:00 pm
Wednesday: 7:00 am-4:00 pm
Thursday: 7:00 am-4:00 pm
Friday: 7:00 am-4:00 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Collinsville - Employer Drug Testing Not Offered

1103 Belt Line Rd,

Collinsville, IL 62234

Get Directions
ds-icon--pin Created with Sketch.

30.77 mi away

Schedule Appointment 618-344-8376
Monday: 7:00 am-4:00 pm
Tuesday: 7:00 am-4:00 pm
Wednesday: 7:00 am-4:00 pm
Thursday: 7:00 am-4:00 pm
Friday: 7:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Edwardsville - Employer Drug Testing Not Offered

17 Ginger Creek Mdws,

Glen Carbon, IL 62034

Get Directions
ds-icon--pin Created with Sketch.

32.87 mi away

Schedule Appointment 618-201-1397
Monday: 7:00 am-4:00 pm
Tuesday: 7:00 am-4:00 pm
Wednesday: 7:00 am-4:00 pm
Thursday: 7:00 am-4:00 pm
Friday: 7:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Bethalto - Employer Drug Testing Not Offered

159 E Macarthur Dr,

Bethalto, IL 62010

Get Directions
ds-icon--pin Created with Sketch.

33.33 mi away

Schedule Appointment 618-484-8438
Monday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Tuesday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Wednesday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Thursday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Friday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Maryville

2136 Vadalabene Dr,

Ste A

Maryville, IL 62062

Get Directions
ds-icon--pin Created with Sketch.

33.38 mi away

Schedule Appointment 618-288-4163
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Shiloh - Employer Drug Testing Not Offered

1197 Fortune Blvd,

Ste 2

Shiloh, IL 62269

Get Directions
ds-icon--pin Created with Sketch.

33.68 mi away

Schedule Appointment 618-628-3975
Monday: 7:00 am-4:00 pm
Tuesday: 7:00 am-4:00 pm
Wednesday: 7:00 am-4:00 pm
Thursday: 7:00 am-4:00 pm
Friday: 7:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Troy IL-Employer Drug Testing Not Offered

108 W Us Highway 40,

Troy, IL 62294

Get Directions
ds-icon--pin Created with Sketch.

36.45 mi away

Schedule Appointment 618-472-4865
Monday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Tuesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Wednesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Thursday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Friday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Macoupin County Chiropractic

704 S Hackman St,

Staunton, IL 62088

Get Directions
ds-icon--pin Created with Sketch.

48.91 mi away

618-635-2502
Monday: 9:00 am-12:00 pm , 1:00 pm-5:00 pm
Tuesday: 8:00 am-12:00 pm
Wednesday: 9:00 am-12:00 pm , 1:00 pm-5:00 pm
Thursday: 8:00 am-12:00 pm
Friday: 9:00 am-12:00 pm , 1:00 pm-5:00 pm
Saturday: 7:30 am-11:00 am
Sunday: Closed

Our focus on your safety

Our safety precautions help ensure your confidence and comfort while visiting our Patient Service Centers to get the testing you need, today and every day.

Learn More

Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2025 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.