Template Sonora Quest Laboratories - Flagstaff - 1100 N. San Francisco St. Share: Medical LaboratoriesBioscienceDrug Testing Facilities Visit Website 1100 N. San Francisco St., Ste. C Flagstaff, AZ 86001 (928) 779-5587 (928) 774-6331 (fax) Map What's Nearby? Distance: 5 10 15 20 25 50 mi.