GEM Drug and Alcohol Testing Service offers years of experience in on site drug screen testing and collection. We also offer a monitoring and tracking program for DOT professional employees previously tested and did not adhere to the DOT guidelines. GEM Drug and Alcohol Testing Service provides top-notch service, for private businesses as well as corporate organizations. We are equipped to handle any DOT issue at any hour of the day. We provide effective drug free workplace drug testing programs to everyone from individuals to large corporations. We are committed to exceptional customer service and dependability in keeping your workplace safe and in compliance. WE ANSWER THE PHONE when you need us. "WHEN YOU CALL WE WON'T STALL" Certified to perform testing on the following Federal DOT Agencies: FMCSA, FAA, FRA, FTA, PHMSA, USGC