Quest Diagnostics

Lab Testing at Ssm Health Express Clinic Mt Vernon

Clinic partner location in Mount Vernon, IL 62864.

Partner Location

This location is part of Quest's partner network. Services and availability may differ from a standard Quest Patient Service Center. Please call 618-899-3278 before visiting to confirm they accept your lab order.

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Note: tests available at this location depend on its services. Confirm by calling before visiting.

Address

602 S 42nd St
Mount Vernon, IL 62864
Jefferson County

618-899-3278

Hours

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

Nearby alternatives

Quest Diagnostics - Mount Vernon Il
4 Cusumano Professional Plaza Dr Suite B, Mount Vernon, IL 62864
0.1 mi
LabCorp Mount Vernon
3001 Broadway St, Mount Vernon, IL 62864
0.8 mi
Ssm Health Express Clinic Centralia
1003 E Mccord St, Centralia, IL 62801
17.9 mi
Salem Work Safety
1250 W Whittaker St, Salem, IL 62881
21.7 mi
Perry County Health Department - 3rd Party Draw Site
907 S Main St, Pinckneyville, IL 62274
29 mi

About this location

Clinic partner location. Quest Diagnostics operates one of the largest networks of clinical laboratories in the United States, offering a wide range of diagnostic tests for patients, physicians, and employers.

Listing last updated 2026-04-25.