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Quest Diagnostics

Lab Testing at First Care Industrial Medicine Center - Questselect Members Only

QuestSelect / Members Only — access restricted in Ontario, CA 91762.

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 Upland (1.8 miles away) instead. We display this address for completeness. Please verify access by calling 909-983-0474 before visiting.

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Or see LabCorp Upland (1.8 miles away) for walk-in testing.

Address

754 N Mountain Ave
Ontario, CA 91762
San Bernardino County

Hours

Monday8:00 AM – 2:00 PM
Tuesday8:00 AM – 2:00 PM
Wednesday8:00 AM – 2:00 PM
Thursday8:00 AM – 2:00 PM
Friday8:00 AM – 2:00 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.