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Quest Diagnostics

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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.

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US Facilities & Operations International Facilities & Operations

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Quest Diagnostics - Mt. Pleasant

520 N. Mission,

Suite A

Mt. Pleasant, MI 48858

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16.36 mi away

Schedule Appointment 989-220-9195
Monday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Tuesday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Wednesday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Thursday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Friday: 7:00 am-12:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Midland Employer - Drug Testing Not Offered

555 W Wackerly St,

Ste 3500

Midland, MI 48640

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30.2 mi away

Schedule Appointment 989-948-0039
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 - Saginaw Center

2062 N Center Rd,

Saginaw, MI 48603

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35.43 mi away

Schedule Appointment 989-574-5287
Monday: 6:00 am-4:00 pm
Tuesday: 6:00 am-4:00 pm
Wednesday: 6:00 am-4:00 pm
Thursday: 6:00 am-4:00 pm
Friday: 6:00 am-4:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Bay City Euclid- EMPLOYEE DRUG TESTING NOT OFFERED

1580 S Euclid Ave,

Bay City, MI 48706

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42.77 mi away

Schedule Appointment 989-671-2774
Monday: 6:00 am-4:00 pm
Tuesday: 6:00 am-4:00 pm
Wednesday: 6:00 am-4:00 pm
Thursday: 6:00 am-4:00 pm
Friday: 6:00 am-4:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - East Lansing

2025 Abbot Road,

East Lansing, MI 48823

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44.35 mi away

Schedule Appointment 517-855-8280
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 - Frankenmuth - Employer Drug Testing Not Offered

487 N Main St,

Ste E

Frankenmuth, MI 48734

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49.92 mi away

Schedule Appointment 989-326-7678
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 - Belmont West River Drive

6231 West River Dr NE,

Belmont, MI 49306

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53.67 mi away

Schedule Appointment 616-490-3702
Monday: 7:00 am-11:00 am , 12:00 pm-3:00 pm
Tuesday: 7:00 am-11:00 am , 12:00 pm-3:00 pm
Wednesday: 7:00 am-11:00 am , 12:00 pm-3:00 pm
Thursday: 7:00 am-11:00 am , 12:00 pm-3:00 pm
Friday: 7:00 am-11:00 am , 12:00 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Flint Villa Linde Parkway - Employer Drug Screens Not Offered At This Site

5080 Villa Linde Pkwy,

Ste 3

Flint, MI 48532

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54.12 mi away

Schedule Appointment 810-733-8460
Monday: 5:30 am-5:00 pm
Tuesday: 5:30 am-5:00 pm
Wednesday: 5:30 am-5:00 pm
Thursday: 5:30 am-5:00 pm
Friday: 5:30 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Inside Walmart Corunna Road

4313 Corunna Rd,

Flint, MI 48532

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55.18 mi away

Schedule Appointment 810-221-1851
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: 7:00 am-11:00 am
Sunday: Closed
Walmart-Quest_Flint_P0325a - Walmart-Quest_Flint_P0325a

4313 Corunna Rd,

Drive-thru

Flint, MI 48532

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55.18 mi away

866-697-8378
Monday: Vary
Tuesday: Vary
Wednesday: Vary
Thursday: Vary
Friday: Vary
Saturday: Vary
Sunday: Vary
Quest Diagnostics - Mt Morris Employer Drug Testing Not Offered

11515 N Saginaw St,

Mount Morris, MI 48458

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55.29 mi away

Schedule Appointment 810-686-4440
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 - Grand Rapids Beltline

1971 E Beltline Ave Ne,

Ste 209

Grand Rapids, MI 49525

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55.38 mi away

Schedule Appointment 616-240-7817
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 - Flint North Ballenger Park Plaza - Employer Drug Screens Not Offered At This Site

G1071 N Ballenger Hwy,

Ste 101

Flint, MI 48504

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55.94 mi away

Schedule Appointment 810-232-4559
Monday: 7:00 am-4:00 pm
Tuesday: 7:00 am-4:00 pm
Wednesday: 7:00 am-3:00 pm
Thursday: 7:00 am-4:00 pm
Friday: 7:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Grand Blanc Porter Employer Drug Testing Not Offered

6011 Porter Rd,

Grand Blanc, MI 48439

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61.78 mi away

Schedule Appointment 810-695-7975
Monday: 6:00 am-4:00 pm
Tuesday: 6:00 am-4:00 pm
Wednesday: 6:00 am-10:00 am
Thursday: 6:00 am-4:00 pm
Friday: 6:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Employer Drug Testing Not Offered - Inside Walmart Burton

5323 E Court St N,

Burton, MI 48509

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62.29 mi away

Schedule Appointment 810-221-1983
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Grand Rapids Lake Michigan Drive

3935 Lake Michigan Dr Nw,

Walker, MI 49534

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64.13 mi away

Schedule Appointment 616-204-9160
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: Closed
Sunday: Closed
Quest Diagnostics - Fenton Fenway Employer Drug Testing Not Offered

425 N Fenway Dr,

Fenton, MI 48430

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64.45 mi away

Schedule Appointment 248-331-6042
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 - Grand Blanc Regency Park - Employer Drug Testing Not Offered

3434 Regency Park Dr,

Ste B

Grand Blanc, MI 48439

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64.67 mi away

Schedule Appointment 248-247-9489
Monday: 7:00 am-4:00 pm
Tuesday: 7:00 am-4:00 pm
Wednesday: 7:00 am-5:00 pm
Thursday: 7:00 am-4:00 pm
Friday: 7:00 am-1:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Fenton Caroline Employer Drug Testing Not Offered

234 W Caroline St,

Fenton, MI 48430

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65.42 mi away

Schedule Appointment 248-230-0843
Monday: 6:00 am-3:00 pm
Tuesday: 6:00 am-3:00 pm
Wednesday: 6:00 am-3:00 pm
Thursday: 6:00 am-3:00 pm
Friday: 6:00 am-3:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Davison Employer Drug Testing Not Offered

1097 S State Rd,

Unit 2

Davison, MI 48423

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66.59 mi away

Schedule Appointment 810-653-7651
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 - Cadillac

520 Cobb St,

Cadillac, MI 49601

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70.41 mi away

Schedule Appointment 231-429-7237
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

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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.