Quest Diagnostics

Lab Testing at Quest Diagnostics - Old Saybrook

Quest Diagnostics Patient Service Center in Old Saybrook, CT 06475.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

665 Boston Post Rd Old Saybrook Shopping Center
Old Saybrook, CT 06475
Middlesex County

860-339-4298

Hours

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

Nearby alternatives

Quest Diagnostics - East Lyme
15 Chesterfield Rd, East Lyme, CT 06333
10.1 mi
Quest Diagnostics - Madison
11 Woodland Rd Woodland Office Park Unit 3b, Madison, CT 06443
11.6 mi
Quest Diagnostics - New London Bank Street
721 Bank St, New London, CT 06320
14.7 mi
Quest Diagnostics - Guilford - Employer Drug Testing Not Offered
631 Boston Post Rd, Guilford, CT 06437
15.1 mi
Quest Diagnostics - Groton - Employer Drug Testing Not Offered
85 Poheganut Dr, Groton, CT 06340
19.1 mi

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About this location

Quest Diagnostics Patient Service Center. Quest Diagnostics operates one of the largest networks of clinical laboratories in the United States, offering a wide range of diagnostic tests for patients, physicians, and employers.

Listing last updated 2026-04-25.