We are a Federally certified DOT and Non-DOT Drug & Alcohol Collection agency. We also conduct DNA screening collections for paternity and genealogy. Our mission is to provide professional Drug and Alcohol testing services with integrity and commitment to our clients and our community. Our service/process is designed to eliminate cheating and are provided in a reliable, accurate, and confidential manner. With Twin Tiers, you can anticipate infinite professionalism and confidentiality throughout the process. Twin Tiers Drug & Alcohol Testing, LLC makes drug and alcohol testing convenient, efficient, and cost effective. We offer 24/7 on-site mobile testing, providing our services discreetly at your location. Our staff members are thoroughly trained and certified. The need for comprehensive policies, procedures, drug and alcohol testing in the workplace is clear. Further reflection provided evidence that there are many applications for good drug and alcohol screening and testing programs. Private industry, professional sports, government agencies, schools, commercial institutions, corrections and law enforcement agencies all share this common goal.