4041 Delaware Ave,
Ste 110
Tonawanda, NY 14150
Get Directions
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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1.07 mi away
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:
6:00 am-11:00 am
Sunday:
Closed
3.15 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
3.35 mi away
Monday:
5:00 am-3:00 pm
Tuesday:
5:00 am-3:00 pm
Wednesday:
5:00 am-3:00 pm
Thursday:
5:00 am-3:00 pm
Friday:
5:00 am-3:00 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - Delaware Place Plaza
2629 Delaware Ave,
Buffalo, NY 14216
Get Directions3.4 mi away
Monday:
5:00 am-1:00 pm
Tuesday:
5:00 am-1:00 pm
Wednesday:
5:00 am-1:00 pm
Thursday:
5:00 am-1:00 pm
Friday:
5:00 am-1:00 pm
Saturday:
Closed
Sunday:
Closed
3.5 mi away
Monday:
6:00 am-5:00 pm
Tuesday:
6:00 am-5:00 pm
Wednesday:
6:00 am-5:00 pm
Thursday:
6:00 am-5:00 pm
Friday:
6:00 am-5:00 pm
Saturday:
6:00 am-11:00 am
Sunday:
Closed
Quest Diagnostics - Lawn Avenue
155 Lawn Ave,
Buffalo, NY 14207
Get Directions4.02 mi away
Monday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Tuesday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Wednesday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Thursday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Friday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - Grand Island
1738 Grand Island Blvd,
Grand Island, NY 14072
Get Directions4.96 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:
Closed
Sunday:
Closed
Quest Diagnostics - 3842 Harlem
3842 Harlem Rd,
Cheektowaga, NY 14215
Get Directions5.44 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:
Closed
Sunday:
Closed
Quest Diagnostics - Jefferson
1317 Jefferson Ave,
Buffalo, NY 14208
Get Directions6.41 mi away
Monday:
8:00 am-4:00 pm
Tuesday:
8:00 am-4:00 pm
Wednesday:
8:00 am-4:00 pm
Thursday:
8:00 am-4:00 pm
Friday:
8:00 am-4:00 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - 455 Delaware
455 Delaware Ave,
Buffalo, NY 14202
Get Directions7.46 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:
6:00 am-11:00 am
Sunday:
Closed
7.84 mi away
Monday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Tuesday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Wednesday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Thursday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Friday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
8.07 mi away
Monday:
5:30 am-1:30 pm
Tuesday:
5:30 am-1:30 pm
Wednesday:
5:30 am-1:30 pm
Thursday:
5:30 am-1:30 pm
Friday:
5:30 am-1:30 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - Maple Road
2350 Maple Rd,
Amherst, NY 14221
Get Directions8.35 mi away
Monday:
6:20 am-12:00 pm , 12:30 pm-4:00 pm
Tuesday:
6:20 am-12:00 pm , 12:30 pm-4:00 pm
Wednesday:
6:20 am-12:00 pm , 12:30 pm-4:00 pm
Thursday:
6:20 am-12:00 pm , 12:30 pm-4:00 pm
Friday:
6:20 am-12:00 pm , 12:30 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
8.52 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 - Niagara Falls
1370 Military Rd,
Niagara Falls, NY 14304
Get Directions8.54 mi away
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:
6:00 am-11:00 am
Sunday:
Closed
9.1 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:
6:00 am-11:00 am
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. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only. May include AI-generated and/or AI-modified imagery.