According to our records, this business is located at 2752 Harrison Ave. in Eureka (in Humboldt County), California 95501, the location GPS coordinates are: 40.783101 (latitude), -124.140847 (longitude). Quest Labs is categorized under Testing Laboratories (SIC code 8071). Current estimates show that the unit has a sales volume of $141,000 and staff of approximately 1 worker. You can contact the company by phone at (707) 442-3449.