Lab Testing at Medical Diagnostic Lab - Questselect Members Only
QuestSelect / Members Only — access restricted in Belleville, IL 62223.
Restricted Access. Verify eligibility before visiting.
This is a QuestSelect program location. Walk-in access is restricted to QuestSelect members through participating employers or health plans. If you are not enrolled in QuestSelect, this location is unlikely to accept your lab order. Consider Quest Diagnostics - Belleville (1.5 miles away) instead. We display this address for completeness. Please verify access by calling 618-233-0522 before visiting.
Looking for a publicly accessible location?
Browse All TestsOr see Quest Diagnostics - Belleville (1.5 miles away) for walk-in testing.
Address
45 Sheffield DriveBelleville, IL 62223
St. Clair County
Hours
| 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 |
Nearby alternatives
- Quest Diagnostics - Belleville3030 Frank Scott Pkwy W Ste 5, Belleville, IL 622231.5 mi
- LabCorp Shiloh1207 Thouvenot Lane Suite 400, Shiloh, IL 622696.9 mi
- Quest Diagnostics - Shiloh - Employer Drug Testing Not Offered1197 Fortune Blvd Ste 2, Shiloh, IL 622697.6 mi
- Teksolv, Inc - Collinsville Il100 Lanter Ct Ste 8, Collinsville, IL 622349.8 mi
- Quest Diagnostics - Collinsville - Employer Drug Testing Not Offered1103 Belt Line Rd, Collinsville, IL 6223410.6 mi
About this location
QuestSelect / Members Only — access restricted. 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.