600 E Marshall St,
West Chester, PA 19380
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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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1.04 mi away
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:
7:00 am-12:00 pm
Sunday:
Closed
5.24 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
Quest Diagnostics - Paoli - Employer Drug Testing Not Offered
250 W Lancaster Ave,
Paoli, PA 19301
Get Directions7.05 mi away
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 - Brandywine Village
1235 Horseshoe Pike,
Downingtown, PA 19335
Get Directions7.21 mi away
Monday:
6:30 am-2:00 pm
Tuesday:
6:30 am-2:00 pm
Wednesday:
6:30 am-2:00 pm
Thursday:
6:30 am-2:00 pm
Friday:
6:30 am-2:00 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - Thorndale
3301 E Lincoln Hwy,
Thorndale, PA 19372
Get Directions8.0 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
9.94 mi away
Monday:
6:30 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday:
6:30 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday:
6:30 am-12:00 pm , 1:00 pm-3:30 pm
Thursday:
6:30 am-12:00 pm , 1:00 pm-3:30 pm
Friday:
6:30 am-12:00 pm , 1:00 pm-3:30 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - Media
1167A W Baltimore Pike,
Media, PA 19063
Get Directions10.46 mi away
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 - Devon
227 W Lancaster Ave,
Devon, PA 19333
Get Directions10.6 mi away
Monday:
6:30 am-11:00 am , 12:00 pm-3:00 pm
Tuesday:
6:30 am-11:00 am , 12:00 pm-3:00 pm
Wednesday:
6:30 am-11:00 am , 12:00 pm-3:00 pm
Thursday:
6:30 am-11:00 am , 12:00 pm-3:00 pm
Friday:
6:30 am-11:00 am , 12:00 pm-3:00 pm
Saturday:
8:00 am-12:00 pm
Sunday:
Closed
10.99 mi away
Monday:
6:30 am-2:30 pm
Tuesday:
6:30 am-2:30 pm
Wednesday:
6:30 am-2:30 pm
Thursday:
6:30 am-2:30 pm
Friday:
6:30 am-2:30 pm
Saturday:
8:00 am-12:00 pm
Sunday:
Closed
12.87 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
13.15 mi away
Monday:
9:00 am-3:00 pm
Tuesday:
9:00 am-3:00 pm
Wednesday:
9:00 am-3:00 pm
Thursday:
9:00 am-3:00 pm
Friday:
9:00 am-3:00 pm
Saturday:
Closed
Sunday:
Closed
13.81 mi away
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
15.24 mi away
Monday:
7:00 am-3:00 pm
Tuesday:
7:00 am-3:00 pm
Wednesday:
7:00 am-3:00 pm
Thursday:
7:00 am-3:00 pm
Friday:
7:00 am-3:00 pm
Saturday:
7:00 am-11:00 am
Sunday:
Closed
15.38 mi away
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:
7:00 am-11:00 am
Sunday:
Closed
Quest Diagnostics - MacDade Boulevard
501 W MacDade Boulevard,
Folsom, PA 19033
Get Directions16.0 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
16.28 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
17.14 mi away
Monday:
7:00 am-12:30 pm , 1:00 pm-3:30 pm
Tuesday:
7:00 am-12:30 pm , 1:00 pm-3:30 pm
Wednesday:
7:00 am-12:30 pm , 1:00 pm-3:30 pm
Thursday:
7:00 am-12:30 pm , 1:00 pm-3:30 pm
Friday:
7:00 am-12:30 pm , 1:00 pm-3:30 pm
Saturday:
7:00 am-11:30 am
Sunday:
Closed
Quest Diagnostics - Pottstown
1569 Medical Dr,
Pottstown, PA 19464
Get Directions17.64 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
Quest Diagnostics - Glenolden
90 N Macdade Blvd,
Glenolden, PA 19036
Get Directions17.67 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
18.12 mi away
Monday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Tuesday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Wednesday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Thursday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Friday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
18.63 mi away
Monday:
6:30 am-11:30 am , 12:00 pm-3:00 pm
Tuesday:
6:30 am-11:30 am , 12:00 pm-3:00 pm
Wednesday:
6:30 am-11:30 am , 12:00 pm-3:00 pm
Thursday:
6:30 am-11:30 am , 12:00 pm-3:00 pm
Friday:
6:30 am-11:30 am , 12:00 pm-3:00 pm
Saturday:
8:00 am-12:00 pm
Sunday:
Closed
18.79 mi away
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 - East Norriton
2808 Dekalb Pike,
East Norriton, PA 19401
Get Directions18.99 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
Quest Diagnostics - Omega
A98 100 Omega Drive,
Newark, DE 19713
Get Directions20.49 mi away
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:
8:00 am-11:00 am
Sunday:
Closed
Quest Diagnostics - Roxborough
525 Jamestown Street,
Philadelphia, PA 19128
Get Directions21.04 mi away
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 - Pennsville
181 N Broadway,
Pennsville, NJ 08070
Get Directions22.77 mi away
Monday:
6:30 am-2:30 pm
Tuesday:
6:30 am-2:30 pm
Wednesday:
6:30 am-2:30 pm
Thursday:
6:30 am-2:30 pm
Friday:
6:30 am-2:30 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - Inside New Castle Walmart Store
117 Wilton Blvd,
New Castle, DE 19720
Get Directions22.85 mi away
Monday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Tuesday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Wednesday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Thursday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Friday:
7:00 am-11:00 am , 12:00 pm-4:00 pm
Saturday:
7:00 am-12:00 pm
Sunday:
Closed
22.89 mi away
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
23.34 mi away
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 - Gilbertsville
1050 E Philadelphia Ave,
Gilbertsville, PA 19525
Get Directions23.53 mi away
Monday:
6:00 am-2:00 pm
Tuesday:
6:00 am-2:00 pm
Wednesday:
6:00 am-2:00 pm
Thursday:
6:00 am-2:00 pm
Friday:
6:00 am-2:00 pm
Saturday:
7:00 am-12:00 pm
Sunday:
Closed
Quest Diagnostics - South Broad Street
2219 S Broad St,
Philadelphia, PA 19148
Get Directions23.62 mi away
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:
8:00 am-12:00 pm
Sunday:
Closed
Quest Diagnostics - Locust Street - Employer Drug Testing Not Offered
803 Locust St,
Philadelphia, PA 19107
Get Directions24.16 mi away
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 - Lansdale
545 S Broad St,
Lansdale, PA 19446
Get Directions24.19 mi away
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-3:00 pm
Saturday:
7:00 am-1:00 pm
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.