Testing Locations » Arizona » Scottsdale AZ » Sonora Quest Laboratories – Scottsdale-Scottsdale Rd & Earll Dr – Employer Drug Testing Not Offered Sonora Quest Laboratories – Scottsdale-Scottsdale Rd & Earll Dr – Employer Drug Testing Not Offered Sonora Quest Laboratories – Scottsdale-Scottsdale Rd & Earll Dr – Employer Drug Testing Not Offered7281 E Earll DrSte 1Scottsdale, AZ 85251-7245 United States NE of Scottsdale Rd and Thomas on Earll Dr.