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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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Quest Diagnostics - West Grove

1011 W Baltimore Pike,

Ste 209

West Grove, PA 19390

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4.26 mi away

Schedule Appointment 610-345-0946
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
Quest Diagnostics - Thorndale

3301 E Lincoln Hwy,

Thorndale, PA 19372

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11.71 mi away

Schedule Appointment 610-384-1894
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 - McFarlan Road

402 Mcfarlan Rd,

Ste 302

Kennett Square, PA 19348

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12.18 mi away

Schedule Appointment 610-444-3213
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 - Brandywine Village

1235 Horseshoe Pike,

Downingtown, PA 19335

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13.73 mi away

Schedule Appointment 610-269-3914
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 - Downingtown

150 E Pennsylvania Ave,

Ste 210

Downingtown, PA 19335

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14.66 mi away

Schedule Appointment 610-269-2233
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 - Stoney Batter

5311 Limestone Rd,

Suite 202

Wilmington, DE 19808

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15.17 mi away

Schedule Appointment 302-239-5273
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 - Millcreek

4512 Kirkwood Hwy,

Suite 100

Wilmington, DE 19808

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17.63 mi away

Schedule Appointment 302-633-0374
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
Quest Diagnostics - West Chester

600 E Marshall St,

West Chester, PA 19380

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18.09 mi away

Schedule Appointment 610-344-0106
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
Quest Diagnostics - Omega

A98 100 Omega Drive,

Newark, DE 19713

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18.3 mi away

Schedule Appointment 302-455-0720
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 - Inside Elkton Walmart Store

1000 E Pulaski Hwy,

Elkton, MD 21921

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20.18 mi away

Schedule Appointment 410-441-5538
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: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Newark DE Biddle Avenue

300 Biddle Ave,

Ste 212

Newark, DE 19702

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21.05 mi away

Schedule Appointment 302-838-2223
Monday: 7:00 am-11:30 am , 12:30 pm-3:30 pm
Tuesday: 7:00 am-11:30 am , 12:30 pm-3:30 pm
Wednesday: 7:00 am-11:30 am , 12:30 pm-3:30 pm
Thursday: 7:00 am-11:30 am , 12:30 pm-3:30 pm
Friday: 7:00 am-11:30 am , 12:30 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Silverside

2700 Silverside Rd,

Suite 6

Wilmington, DE 19810

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21.73 mi away

Schedule Appointment 302-478-4072
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
Quest Diagnostics - Inside New Castle Walmart Store

117 Wilton Blvd,

New Castle, DE 19720

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22.17 mi away

Schedule Appointment 302-414-9001
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

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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.