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Quest Diagnostics

Lab Testing at Dot Stop - Questselect Members Only

QuestSelect / Members Only — access restricted in Plymouth, IN 46563.

Restricted Access. Verify eligibility before visiting.

This is a QuestSelect program location. Walk-in access is restricted to QuestSelect members through participating employers or health plans. If you are not enrolled in QuestSelect, this location is unlikely to accept your lab order. Consider LabCorp Mishawaka (22.3 miles away) instead. We display this address for completeness. Please verify access by calling 866-368-7867 before visiting.

Looking for a publicly accessible location?

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Or see LabCorp Mishawaka (22.3 miles away) for walk-in testing.

Address

2915 Gary Dr
Plymouth, IN 46563
Marshall County

Hours

Monday24 hours
Tuesday24 hours
Wednesday24 hours
Thursday24 hours
Friday12:00 AM – 4:00 PM
SaturdayClosed
SundayClosed

Nearby alternatives

About this location

QuestSelect / Members Only — access restricted. 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.