The Dearborn Hospital Outpatient Lab is located on the ground floor down the hall from registration. It is a long walk to OP Lab from the main lobby entrance. For patients with mobility concerns, please ask at the volunteer desk for assistance with transportation. This location operates Monday through Friday from 6:30 a.m. to 5:30 p.m., and on Saturdays from 8:00 a.m. to 12:00 p.m. Please note that the Outpatient Lab is closed on Sundays and holidays.