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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 - Meadow

301 Meadow Dr,

Unit 76

North Tonawanda, NY 14120

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2.86 mi away

Schedule Appointment 716-694-9558
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: 6:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - West Amherst

3950 E Robinson Rd,

Ste 105

Amherst, NY 14228

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2.95 mi away

Schedule Appointment 716-691-1744
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
Focus Occupational - Amherst (Preferred)

2099 Niagara Falls Blvd,

Amherst, NY 14228

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4.57 mi away

716-899-4300
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: 10:00 am-3:00 pm
Sunday: Closed
Quest Diagnostics - Tonawanda

4041 Delaware Ave,

Ste 110

Tonawanda, NY 14150

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6.11 mi away

Schedule Appointment 716-877-5040
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
Quest Diagnostics - 3620 Sheridan Drive

3620 Sheridan Dr,

Ste 100

Amherst, NY 14226

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6.98 mi away

Schedule Appointment 716-833-1363
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 - Niagara Falls

1370 Military Rd,

Niagara Falls, NY 14304

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7.31 mi away

Schedule Appointment 716-297-7105
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
Quest Diagnostics - Grand Island

1738 Grand Island Blvd,

Grand Island, NY 14072

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7.82 mi away

Schedule Appointment 716-773-3040
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 - Lockport South Transit

5891 S Transit Rd,

Lockport, NY 14094

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8.36 mi away

Schedule Appointment 716-433-8944
Monday: 5:30 am-4:00 pm
Tuesday: 5:30 am-4:00 pm
Wednesday: 5:30 am-4:00 pm
Thursday: 5:30 am-4:00 pm
Friday: 5:30 am-4:00 pm
Saturday: 6:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Delaware Place Plaza

2629 Delaware Ave,

Delaware Place Plaza

Buffalo, NY 14216

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8.61 mi away

Schedule Appointment 716-874-1703
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: 6:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Lawn Avenue

155 Lawn Ave,

Buffalo, NY 14207

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9.22 mi away

Schedule Appointment 716-877-1113
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 - Maple Road

2350 Maple Rd,

Amherst, NY 14221

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9.26 mi away

Schedule Appointment 716-329-6579
Monday: 6:20 am-2:00 pm
Tuesday: 6:20 am-2:00 pm
Wednesday: 6:20 am-2:00 pm
Thursday: 6:20 am-2:00 pm
Friday: 6:20 am-2:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - 3842 Harlem

3842 Harlem Rd,

Cheektowaga, NY 14215

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9.27 mi away

Schedule Appointment 716-835-9522
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
IMA - Buffalo (Preferred)

699 Hertel Ave,

Ste 355

Buffalo, NY 14207

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9.35 mi away

716-877-4204
Monday: 8:30 am-4:30 pm
Tuesday: 8:30 am-4:30 pm
Wednesday: 8:30 am-4:30 pm
Thursday: 8:30 am-4:30 pm
Friday: 8:30 am-4:30 pm
Saturday: Closed
Sunday: Closed
Pulse Occ Medicine - Buffalo (Preferred)

2228 Delaware Ave,

Buffalo, NY 14216

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9.37 mi away

716-874-2273
Monday: 9:00 am-7:00 pm
Tuesday: 9:00 am-7:00 pm
Wednesday: 9:00 am-7:00 pm
Thursday: 9:00 am-7:00 pm
Friday: 9:00 am-7:00 pm
Saturday: 9:00 am-5:00 pm
Sunday: 9:00 am-5:00 pm

Our focus on your safety

Our safety precautions help ensure your confidence and comfort while visiting our Patient Service Centers to get the testing you need, today and every day.

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Our company

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.