Quest Diagnostics

Lab Testing at Mercy Health - Defiance Occ Hlth

Quest partner location in Defiance, OH 43512.

Partner Location

This location is part of Quest's partner network. Services and availability may differ from a standard Quest Patient Service Center. Please call 419-783-3312 before visiting to confirm they accept your lab order.

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Note: tests available at this location depend on its services. Confirm by calling before visiting.

Address

1400 E 2nd St
Defiance, OH 43512
Defiance County

419-783-3312

Hours

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

Nearby alternatives

LabCorp Bryan
442 W High St, Bryan, OH 43506
17.4 mi
Toxscreen Specialists Llc
7049 County Rd 23 Suite D, Archbold, OH 43502
20.1 mi
Quest Diagnostics - Van Wert North
214 Towne Center Blvd, Van Wert, OH 45891
30.1 mi
Quest Diagnostics - Van Wert Hosp
1250 S Washington St First Fl, Van Wert, OH 45891
32.4 mi
Reliable Testing Clinic - 3rd Party Draw Site
546 Sand Ridge Rd, Bowling Green, OH 43402
35.9 mi

About this location

Quest partner location. 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.