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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 - Torrington

1929 E Main St,

Torrington, CT 06790

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2.93 mi away

Schedule Appointment 959-901-5709
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 - CHH 540 Litchfield CT Torrington CT

540 Litchfield Street,

First Floor

Torrington, CT 06790

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3.14 mi away

Schedule Appointment 860-558-5039
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 - CHW WINSTED

10 Center St,

Winsted, CT 06098

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6.63 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 - HHC 80 South Main St Winds

80 S Main St,

Ll03

Winsted, CT 06098

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6.72 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 - Unionville

45 S Main St,

Unionville, CT 06085

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13.98 mi away

Schedule Appointment 860-777-1686
Monday: 6:00 am-12:00 pm
Tuesday: 6:00 am-12:00 pm
Wednesday: 6:00 am-12:00 pm
Thursday: 6:00 am-12:00 pm
Friday: 6:00 am-12:00 pm
Saturday: 6:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Avon

54 W Avon Rd,

Ste 104

Avon, CT 06001

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14.01 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 - Bristol

935 Farmington Avenue,

Bristol, CT 06010

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15.08 mi away

Schedule Appointment 860-516-5902
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: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - 100 Simsbury Rd Avon CT

100 Simsbury Rd,

Ste 210

Avon, CT 06001

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15.91 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 - Farmington 2

838D Farmington Ave,

Farmington, CT 06032

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17.68 mi away

Schedule Appointment 959-262-3600
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: Closed
Sunday: Closed
Quest Diagnostics - Southington

99 Executive Blvd,

Southington, CT 06489

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19.55 mi away

Schedule Appointment 203-910-1451
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-11:00 am
Sunday: Closed
Quest Diagnostics - Southington Queen Street

365 Queen Street,

Unit C

Southington, CT 06489

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19.84 mi away

Schedule Appointment 860-736-3632
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 - Quest Diagnostics 183 N Mountain Road - Employer Drug Testing Not Offered

183 N Mountain Rd,

New Britain, CT 06053

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19.85 mi away

Schedule Appointment 860-438-8984
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: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Granby - Employer Drug Testing Not Offered

18 E Granby Rd,

Ste 203

Granby, CT 06035

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19.86 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 - Waterbury West Main Street - Employer Drug Testing Not Offered

1389 West Main Street, Suite 125,

Waterbury, CT 06708

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20.14 mi away

Schedule Appointment 475-689-2380
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 - Bloomfield - Employer Drug Testing Not Offered

701 Cottage Grove Rd,

Bldg B, Suite 130

Bloomfield, CT 06002

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20.92 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 - West Hartford Farmington Avenue - Employer Drug Testing Not Offered

970 Farmington Ave,

Suite 209, Second Floor

West Hartford, CT 06107

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21.04 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 - Bloomfield - Employer Drug Testing Not Offered

2 Northwestern Dr,

Bloomfield, CT 06002

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21.41 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 - Grove Street New Britain

1 Grove St,

New Britain, CT 06053

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21.44 mi away

Schedule Appointment 860-414-2792
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: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - New Milford - Employer Drug Testing Not Offered

11 Old Park Ln Road,

New Milford Medical Group Office Bldg

New Milford, CT 06776

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22.08 mi away

Schedule Appointment 860-717-3550
Monday: 9:00 am-5:00 pm
Tuesday: 9:00 am-5:00 pm
Wednesday: 9:00 am-5:00 pm
Thursday: 9:00 am-5:00 pm
Friday: 9:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Prospect

166 Waterbury Rd,

Pond Place Med Bldg

Prospect, CT 06712

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22.6 mi away

Schedule Appointment 475-689-2389
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-12:00 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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23.05 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 - Kensington - Employer Drug Testing Not Offered

320 New Britain Rd,

Kensington, CT 06037

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23.36 mi away

Schedule Appointment 860-259-2981
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: Closed
Sunday: Closed
Quest Diagnostics - Newington - Employer Drug Testing Not Offered

955 Main St,

Newington, CT 06111

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23.47 mi away

Schedule Appointment 860-200-7486
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: 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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24.36 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 - Seymour Street - Employer Drug Testing Not Offered

85 Seymour St,

Ste 215

Hartford, CT 06106

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24.37 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 - Retreat

100 Retreat Ave,

Ste 102

Hartford, CT 06106

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24.52 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
Quest Diagnostics - Newington Berlin Turnpike

2284 Berlin Tpke,

Newington, CT 06111

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24.59 mi away

Schedule Appointment 860-729-2951
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
Quest Diagnostics - New Milford

146 Danbury Rd,

Ste F

New Milford, CT 06776

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24.89 mi away

Schedule Appointment 860-354-1979
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

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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.