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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 - Concord Hall St

81 Hall St,

2Nd Floor

Concord, NH 03301

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12.1 mi away

Schedule Appointment 603-223-0307
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: Closed
Sunday: Closed
Quest Diagnostics - Gilford

14 Country Club Rd,

Next Door To The Big Apple Gas Station.

Gilford, NH 03249

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12.89 mi away

Schedule Appointment 603-524-5946
Monday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Goffstown

89 S Mast St,

Goffstown, NH 03045

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24.12 mi away

Schedule Appointment 603-497-7599
Monday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Tuesday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Wednesday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Thursday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Friday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Manchester

195 Mcgregor Street,

Ste 25 Center Entrance

Manchester, NH 03102

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25.89 mi away

Schedule Appointment 603-626-1249
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: Closed
Sunday: Closed
Quest Diagnostics - Bedford NH

160 South River Road,

Bedford, NH 03110

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28.79 mi away

Schedule Appointment 603-621-0110
Monday: 7:00 am-7:00 pm
Tuesday: 7:00 am-7:00 pm
Wednesday: 7:00 am-7:00 pm
Thursday: 7:00 am-7:00 pm
Friday: 7:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Amherst - Employer Drug Testing Not Offered

282 State Route 101,

Suite 1

Amherst, NH 03031

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32.19 mi away

Schedule Appointment 603-249-5306
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 - Derry - Employer Drug Testing Not Offered

14 Tsienneto Rd,

Building A, 2Nd Floor

Derry, NH 03038

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34.09 mi away

Schedule Appointment 603-425-7614
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: Closed
Sunday: Closed
Quest Diagnostics - Derry - Employer Drug Testing Not Offered

6 Tsienneto Road,

Suite LL102

Derry, NH 03038

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34.27 mi away

603-437-3870
Monday: 6:00 am-8:00 pm
Tuesday: 6:00 am-8:00 pm
Wednesday: 6:00 am-8:00 pm
Thursday: 6:00 am-8:00 pm
Friday: 6:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Londonderry

50 Michels Way,

Suite 207

Londonderry, NH 03053

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35.8 mi away

Schedule Appointment 603-851-6901
Monday: 7:00 am-8:00 pm
Tuesday: 7:00 am-8:00 pm
Wednesday: 7:00 am-8:00 pm
Thursday: 7:00 am-8:00 pm
Friday: 7:00 am-5:00 pm
Saturday: 6:30 am-3:00 pm
Sunday: Closed
Quest Diagnostics - Dover - Employer Drug Testing Not Offered

15 Durham Rd,

Suite A

Dover, NH 03820

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37.6 mi away

Schedule Appointment 603-919-2500
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: Closed
Sunday: Closed
Quest Diagnostics - Claremont NH

214 Washington St,

Ste A

Claremont, NH 03743

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41.35 mi away

Schedule Appointment 603-504-3750
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 - Main Street Nashua

300 Main St,

Suite 301B. Next To The Zoo Health Club

Nashua, NH 03060

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42.4 mi away

Schedule Appointment 603-578-0323
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: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Stiles Rd

8 Stiles Rd,

Ste 111

Salem, NH 03079

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43.57 mi away

Schedule Appointment 603-890-6053
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-5:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Portsmouth - Employer Drug Testing Not Offered

200 Griffin Rd,

Ste 12

Portsmouth, NH 03801

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45.0 mi away

Schedule Appointment 603-431-3294
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: Closed
Sunday: Closed
Quest Diagnostics - Pelham

49 Atwood Road,

Pelham, NH 03076

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45.65 mi away

Schedule Appointment 603-537-8156
Monday: 7:30 am-12:30 pm , 1:30 pm-4:00 pm
Tuesday: 7:30 am-12:30 pm , 1:30 pm-4:00 pm
Wednesday: 7:30 am-12:30 pm , 1:30 pm-4:00 pm
Thursday: 7:30 am-12:30 pm , 1:30 pm-4:00 pm
Friday: 7:30 am-12:30 pm , 1:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Methuen 380R Merrimack Street - Employer Drug Testing Not Offered

380R Merrimack Street,

Suite 102

Methuen, MA 01844

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47.88 mi away

Schedule Appointment 978-975-9878
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: Closed
Sunday: Closed
Quest Diagnostics - Holy Family Methuen

60 East St,

Ste 1200

Methuen, MA 01844

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48.4 mi away

Schedule Appointment 978-688-5828
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 - Haverhill

62 Brown St,

Ste 202

Haverhill, MA 01830

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49.13 mi away

Schedule Appointment 978-556-5655
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 - Lawrence - Employer Drug Testing Not Offered

101 Amesbury St, Suite 204,

Lawrence, MA 01840

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49.55 mi away

Schedule Appointment 978-975-4098
Monday: 9:00 am-2:30 pm , 3:30 pm-5:00 pm
Tuesday: 9:00 am-2:30 pm , 3:30 pm-5:00 pm
Wednesday: 9:00 am-2:30 pm , 3:30 pm-5:00 pm
Thursday: 9:00 am-2:30 pm , 3:30 pm-5:00 pm
Friday: 9:00 am-2:30 pm , 3:30 pm-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.