Drug and Alcohol Testing. We are a professional DOT and non-DOT drug and alcohol testing compliance firm located in Memphis, Tennessee . We can help you manage your drug free workplace program and offer you simple solutions for your pre-employment drug testing, random testing program, reasonable suspicion, post-incident and return-to-duty drug, hair testing and alcohol testing. We are committed to providing fast accurate services, by coming to you or you coming to us and we always treat each client in a professional and courteous manner.