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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 - Northampton

6 Hatfield St,

Northampton, MA 01060

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10.62 mi away

Schedule Appointment 413-428-1260
Monday: 7:00 am-12:30 pm , 1:30 pm-3:30 pm
Tuesday: 7:00 am-12:30 pm , 1:30 pm-3:30 pm
Wednesday: 7:00 am-12:30 pm , 1:30 pm-3:30 pm
Thursday: 7:00 am-12:30 pm , 1:30 pm-3:30 pm
Friday: 7:00 am-12:30 pm , 1:30 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Springfield

1284 Saint James Ave,

Springfield, MA 01104

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22.35 mi away

Schedule Appointment 413-755-1711
Monday: 8:00 am-4:30 pm
Tuesday: 8:00 am-4:30 pm
Wednesday: 8:00 am-4:30 pm
Thursday: 8:00 am-4:30 pm
Friday: 8:00 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Riverdale St PSC

935 Riverdale St,

West Springfield, MA 01089

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23.48 mi away

Schedule Appointment 413-574-0880
Monday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Tuesday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Wednesday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Thursday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Friday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Gardner MA - Employer Drug Testing Not Offered

175 Connors St,

Lower Level

Gardner, MA 01440

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30.44 mi away

Schedule Appointment 978-632-3333
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: Closed
Sunday: Closed
Quest Diagnostics - Enfield 54 Hazard Avenue - Employer Drug Testing Not Offered

54 Hazard Ave,

Suite 90

Enfield, CT 06082

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32.95 mi away

Schedule Appointment 860-698-4838
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Pittsfield

42 Summer St,

Ste 305

Pittsfield, MA 01201

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37.11 mi away

Schedule Appointment 413-499-8718
Monday: 7:00 am-4:30 pm
Tuesday: 7:00 am-4:30 pm
Wednesday: 7:00 am-4:30 pm
Thursday: 7:00 am-4:30 pm
Friday: 7:00 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Granby - Employer Drug Testing Not Offered

18 E Granby Rd,

Ste 203

Granby, CT 06035

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37.39 mi away

Schedule Appointment 860-325-4756
Monday: 7:30 am-4:00 pm
Tuesday: 7:30 am-4:00 pm
Wednesday: 7:30 am-4:00 pm
Thursday: 7:30 am-4:00 pm
Friday: 7:30 am-4:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics MA LLC - Holden - Employer Drug Testing Not Offered

52 Boyden Rd,

Ste 203

Holden, MA 01520

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37.91 mi away

Schedule Appointment 508-829-8262
Monday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Windsor Locks

2 Concorde Way, Building 3A,

Windsor Locks, CT 06096

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38.12 mi away

Schedule Appointment 860-370-2970
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 - 1 W Boylston St Worcester, MA

1 W Boylston St,

Ste 102

Worcester, MA 01605

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41.38 mi away

Schedule Appointment 508-853-1208
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: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics MA LLC - Auburn - Employer Drug Testing Not Offered

250 Hampton St,

Grove Medical Building

Auburn, MA 01501

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42.23 mi away

Schedule Appointment 508-721-0939
Monday: 7:30 am-6:00 pm
Tuesday: 7:30 am-6:00 pm
Wednesday: 7:30 am-6:00 pm
Thursday: 7:30 am-6:00 pm
Friday: 7:30 am-6:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Fitchburg 370 Lunenburg

370 Lunenburg St,

Center Suite

Fitchburg, MA 01420

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42.27 mi away

Schedule Appointment 978-956-4049
Monday: 7:30 am-5:00 pm
Tuesday: 7:30 am-5:00 pm
Wednesday: 7:30 am-5:00 pm
Thursday: 7:30 am-5:00 pm
Friday: 7:30 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics MA LLC - Worcester Lincoln Street - Employer Drug Testing Not Offered

291 Lincoln St,

Ste 306

Worcester, MA 01605

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42.32 mi away

Schedule Appointment 508-755-7573
Monday: 7:00 am-4:30 pm
Tuesday: 7:00 am-4:30 pm
Wednesday: 7:00 am-4:30 pm
Thursday: 7:00 am-4:30 pm
Friday: 7:00 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Worcester

100 MLK, Jr. Blvd,

Lower Level

Worcester, MA 01608

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42.41 mi away

Schedule Appointment 508-754-0178
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
Quest Diagnostics - Leominster Erdman Way

79 Erdman Way,

Ste 100

Leominster, MA 01453

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42.46 mi away

Schedule Appointment 978-466-9009
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: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Windsor Mack Street - Employer Drug Testing Not Offered

74 Mack St,

Rear Of Bldg

Windsor, CT 06095

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42.5 mi away

Schedule Appointment 860-607-0546
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: Closed
Sunday: Closed
Quest Diagnostics MA LLC - Leominster North Main Street - Employer Drug Testing Not Offered

85 North Main Street,

Leominster, MA 01453

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42.53 mi away

Schedule Appointment 978-466-5785
Monday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Tuesday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Wednesday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Thursday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Friday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Worcester Shrewsbury Street - Employer Drug Testing Not Offered

328 Shrewsbury St,

Ste Ll1

Worcester, MA 01604

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43.23 mi away

Schedule Appointment 508-755-4445
Monday: 7:30 am-5:30 pm
Tuesday: 7:30 am-5:30 pm
Wednesday: 7:30 am-5:30 pm
Thursday: 7:30 am-5:30 pm
Friday: 7:30 am-5:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - South Windsor - Employer Drug Testing Not Offered

1735 Ellington Rd,

South Windsor, CT 06074

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44.1 mi away

Schedule Appointment 860-327-9093
Monday: 7:00 am-4:30 pm
Tuesday: 7:00 am-4:30 pm
Wednesday: 7:00 am-4:30 pm
Thursday: 7:00 am-4:30 pm
Friday: 7:00 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Vernon

444 Hartford Tpke,

Vernon, CT 06066

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44.13 mi away

Schedule Appointment 860-926-0367
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 MA LLC - Clinton - Employer Drug Testing Not Offered

201 Highland St,

2Nd Fl, Ste 1

Clinton, MA 01510

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45.7 mi away

Schedule Appointment 978-368-1601
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 - Bloomfield - Employer Drug Testing Not Offered

2 Northwestern Dr,

Bloomfield, CT 06002

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45.73 mi away

Schedule Appointment 860-242-4547
Monday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Tuesday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Wednesday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Thursday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Friday: 8:00 am-12:30 pm , 1:00 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Bloomfield - Employer Drug Testing Not Offered

701 Cottage Grove Rd,

Bldg B, Suite 130

Bloomfield, CT 06002

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45.83 mi away

Schedule Appointment 860-256-2161
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics MA LLC - Shrewsbury Main Street - Employer Drug Testing Not Offered

604 Main St,

Lower Level

Shrewsbury, MA 01545

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46.09 mi away

Schedule Appointment 508-845-6521
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: Closed
Sunday: Closed
Quest Diagnostics - HHC 80 South Main St Winds

80 S Main St,

Ll03

Winsted, CT 06098

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46.31 mi away

Schedule Appointment 860-558-1869
Monday: 6:30 am-3:30 pm
Tuesday: 6:30 am-3:30 pm
Wednesday: 6:30 am-3:30 pm
Thursday: 6:30 am-3:30 pm
Friday: 6:30 am-3:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Manchester - Employer Drug Testing Not Offered

250 N Main St,

Manchester, CT 06042

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46.32 mi away

Schedule Appointment 860-327-9095
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - CHW WINSTED

10 Center St,

Winsted, CT 06098

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46.47 mi away

Schedule Appointment 860-489-0931
Monday: 8:30 am-12:30 pm , 1:00 pm-3:00 pm
Tuesday: 8:30 am-12:30 pm , 1:00 pm-3:00 pm
Wednesday: 8:30 am-12:30 pm , 1:00 pm-3:00 pm
Thursday: 8:30 am-12:30 pm , 1:00 pm-3:00 pm
Friday: 8:30 am-12:30 pm , 1:00 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics MA LLC - Shrewsbury Julio Drive - Employer Drug Testing Not Offered

26 Julio Drive,

2Nd Floor

Shrewsbury, MA 01545

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46.56 mi away

Schedule Appointment 508-845-3615
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: Closed
Sunday: Closed
Quest Diagnostics - 100 Simsbury Rd Avon CT

100 Simsbury Rd,

Ste 210

Avon, CT 06001

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47.09 mi away

Schedule Appointment 959-223-5467
Monday: 7:30 am-11:00 am , 12:00 pm-4:00 pm
Tuesday: 7:30 am-11:00 am , 12:00 pm-4:00 pm
Wednesday: 7:30 am-11:00 am , 12:00 pm-4:00 pm
Thursday: 7:30 am-11:00 am , 12:00 pm-4:00 pm
Friday: 7:30 am-11:00 am , 12:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Manchester

555 Main Street,

Manchester, CT 06040

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47.73 mi away

Schedule Appointment 860-327-9096
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Avon

54 W Avon Rd,

Ste 104

Avon, CT 06001

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47.97 mi away

Schedule Appointment 860-321-9003
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics MA LLC - Sutton - Employer Drug Testing Not Offered

156-160 Worcester Providence Tpke,

Unit 14

Sutton, MA 01590

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48.1 mi away

Schedule Appointment 508-865-4888
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 - East Hartford Connecticut Blvd - Employer Drug Testing Not Offered

477 Connecticut Boulevard,

Suite 213, Second Floor

East Hartford, CT 06108

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48.39 mi away

Schedule Appointment 860-200-7491
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Northborough Southwest Cut Off - Employer Drug Testing Not Offered

333 Sw Cutoff,

Northborough, MA 01532

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48.59 mi away

Schedule Appointment 508-842-0230
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 - Hartford Woodland Street

21 Woodland St,

Ste L-23, Ground Fl

Hartford, CT 06105

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48.74 mi away

Schedule Appointment 860-200-7481
Monday: 7:30 am-5:00 pm
Tuesday: 7:30 am-5:00 pm
Wednesday: 7:30 am-5:00 pm
Thursday: 7:30 am-5:00 pm
Friday: 7:30 am-5:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Seymour Street - Employer Drug Testing Not Offered

85 Seymour St,

Ste 215

Hartford, CT 06106

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49.56 mi away

Schedule Appointment 860-200-7484
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - CCMC PSC - Employer Drug Testing Not Offered

282 Washington St,

Ste 2H

Hartford, CT 06106

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49.62 mi away

Schedule Appointment 860-200-7482
Monday: 7:30 am-4:30 pm
Tuesday: 7:30 am-4:30 pm
Wednesday: 7:30 am-4:30 pm
Thursday: 7:30 am-4:30 pm
Friday: 7:30 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - West Hartford Farmington Avenue - Employer Drug Testing Not Offered

970 Farmington Ave,

Suite 209, Second Floor

West Hartford, CT 06107

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49.63 mi away

Schedule Appointment 860-200-7496
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-12:00 pm
Sunday: Closed
Quest Diagnostics - Retreat

100 Retreat Ave,

Ste 102

Hartford, CT 06106

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49.64 mi away

Schedule Appointment 860-200-7480
Monday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Tuesday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Wednesday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Thursday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Friday: 8:00 am-12:00 pm , 1:00 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.