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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 - Yale Health Members Only - Employer Drug Testing Not Offered

55 Lock St,

Lower Level-yale Health Members Only

New Haven, CT 06511

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0.21 mi away

Schedule Appointment 866-697-8378
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - New Haven Sherman Avenue - Employer Drug Testing Not Offered

136 SHERMAN AVE,

STE 101

New Haven, CT 06511

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1.13 mi away

Schedule Appointment 203-716-6026
Monday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Tuesday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Wednesday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Thursday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Friday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - West Haven - Employer Drug Testing Not Offered

687 Campbell Ave,

Back Of West Haven Medical Building

West Haven, CT 06516

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3.19 mi away

Schedule Appointment 203-937-2330
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: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - East Haven - Employer Drug Testing Not Offered

190 Main St,

East Haven Mall/Petonitos

East Haven, CT 06512

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4.19 mi away

Schedule Appointment 203-497-3158
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
Quest Diagnostics - Hamden 3000 Dixwell Avenue

3000 Dixwell Ave,

Hamden, CT 06518

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4.7 mi away

Schedule Appointment 203-497-3157
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: 6:30 am-11:00 am
Sunday: Closed
Quest Diagnostics - Orange - Employer Drug Testing Not Offered

240 Indian River Rd,

Orange, CT 06477

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5.55 mi away

Schedule Appointment 203-859-3507
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 - Branford 2

1075 W Main St,

Ste 2 Branhaven Plaza

Branford, CT 06405

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5.94 mi away

Schedule Appointment 475-321-7620
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 - North Haven Broadway Suite 7 - Employer Drug Testing Not Offered

2 Broadway,

Ste 7

North Haven, CT 06473

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6.0 mi away

Schedule Appointment 475-655-7605
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 - North Haven - Employer Drug Testing Not Offered

172 Washington Ave,

North Haven, CT 06473

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6.78 mi away

Schedule Appointment 475-655-7563
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 - Derby - Employer Drug Testing Not Offered

299 Seymour Ave,

Derby, CT 06418

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8.75 mi away

Schedule Appointment 475-777-3484
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: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Milford - Employer Drug Testing Not Offered

233 Broad St,

Milford, CT 06460

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9.98 mi away

Schedule Appointment 203-306-5066
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: 6:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Shelton

515 Bridgeport Ave,

Shelton, CT 06484

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10.04 mi away

Schedule Appointment 475-269-0338
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 - Cheshire

280 S Main St,

Suite 202

Cheshire, CT 06410

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12.25 mi away

Schedule Appointment 203-439-4110
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 - Wallingford North Colony Rd

930 N Colony Rd,

Wallingford, CT 06492

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13.05 mi away

Schedule Appointment 203-439-4116
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-2:00 pm
Sunday: Closed
Quest Diagnostics - Stratford Main Street - Employer Drug Testing Not Offered

2890 Main St,

Stratford, CT 06614

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13.54 mi away

Schedule Appointment 203-455-9003
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 - Guilford - Employer Drug Testing Not Offered

631 Boston Post Rd,

Guilford, CT 06437

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13.76 mi away

Schedule Appointment 203-884-1274
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 - Prospect

166 Waterbury Rd,

Pond Place Med Bldg

Prospect, CT 06712

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14.84 mi away

Schedule Appointment 475-689-2389
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 - Trumbull White Plains Road - Employer Drug Testing Not Offered

948 White Plains Rd,

Unit 5

Trumbull, CT 06611

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15.21 mi away

Schedule Appointment 203-400-6245
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 - Bridgeport Barnum Avenue - Employer Drug Testing Not Offered

1450 Barnum Ave,

Bridgeport, CT 06610

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15.46 mi away

Schedule Appointment 475-988-0509
Monday: 7:30 am-2:00 pm
Tuesday: 7:30 am-2:00 pm
Wednesday: 7:30 am-2:00 pm
Thursday: 7:30 am-2:00 pm
Friday: 7:30 am-2:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Stratford Lordship Boulevard

555 Lordship Blvd,

First Floor

Stratford, CT 06615

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15.75 mi away

Schedule Appointment 203-290-3145
Monday: 7:00 am-2:00 pm
Tuesday: 7:00 am-2:00 pm
Wednesday: 7:00 am-2:00 pm
Thursday: 7:00 am-2:00 pm
Friday: 7:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Bridgeport East Main Street - Employer Drug Testing Not Offered

970 E Main St,

Bridgeport, CT 06608

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16.21 mi away

Schedule Appointment 203-212-5824
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 - Trumbull Technology Drive - Employer Drug Testing Not Offered

115 Technology Dr,

1St Floor

Trumbull, CT 06611

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16.23 mi away

Schedule Appointment 475-239-5516
Monday: 6:00 am-4:30 pm
Tuesday: 6:00 am-4:30 pm
Wednesday: 6:00 am-4:30 pm
Thursday: 6:00 am-4:30 pm
Friday: 6:00 am-4:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Bridgeport Beechmont - Employer Drug Testing Not Offered

3180 Main St,

Beechmont Building 1St Floor

Bridgeport, CT 06606

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16.71 mi away

Schedule Appointment 475-988-0510
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-12:00 pm
Sunday: Closed
Quest Diagnostics - Meriden Broad Street

816 Broad St Ste 22,

The Beeches

Meriden, CT 06450

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17.04 mi away

Schedule Appointment 203-427-9079
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 - Midstate Medical Center - Employer Drug Testing Not Offered

435 Lewis Ave,

Meriden, CT 06451

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17.14 mi away

Schedule Appointment 203-427-9077
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 - Madison

11 Woodland Rd,

Woodland Office Park Unit 3B

Madison, CT 06443

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17.33 mi away

Schedule Appointment 203-318-7071
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: 7:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - Waterbury West Main Street - Employer Drug Testing Not Offered

1389 W MAIN ST,

STE 125

Waterbury, CT 06708

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17.58 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 - Newtown - Employer Drug Testing Not Offered

228 S Main St,

Tj Maxx Shopping Center

Newtown, CT 06470

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18.79 mi away

Schedule Appointment 475-444-8390
Monday: 6:00 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 6:00 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 6:00 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 6:00 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 6:00 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Southbury - Employer Drug Testing Not Offered

385 Main St S,

Southbury, CT 06488

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18.95 mi away

Schedule Appointment 203-405-4118
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 - Fairfield Black Rock - Employer Drug Testing Not Offered

2150 Black Rock Tpke,

Bank Of America Building 2Nd Floor

Fairfield, CT 06825

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19.66 mi away

Schedule Appointment 203-418-4459
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 - Southington

99 Executive Blvd,

Southington, CT 06489

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20.47 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 - Fairfield Post Road - Employer Drug Testing Not Offered

1305 Post Rd,

Ste 101

Fairfield, CT 06824

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21.24 mi away

Schedule Appointment 203-418-4026
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 - Southington Queen Street

365 Queen St,

Unit C

Southington, CT 06489

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21.52 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 - MIddletown 2

440 Saybrook Rd,

Unit 2

Middletown, CT 06457

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22.27 mi away

Schedule Appointment 860-788-4854
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-11:30 am
Sunday: Closed
Quest Diagnostics - Kensington - Employer Drug Testing Not Offered

320 New Britain Rd,

Kensington, CT 06037

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23.7 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 - Bethel - Employer Drug Testing Not Offered

83B Stony Hill Rd Ste 110,

Big Y Shopping Center

Bethel, CT 06801

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24.83 mi away

Schedule Appointment 475-206-0506
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. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.