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

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.