Accredited Drug Testing Inc. (ADT) is a nationwide company specializing in Drug, Alcohol, DNA testing. DOT Physicals and Background Checks. Tests are administered utilizing urine, oral/ saliva, hair follicle, blood and breath alcohol. With Drug Testing Centers and affiliated collection facilities throughout the United States, Accredited Drug Testing Inc. is your one stop shopping source for pre-employment, random, reasonable suspicion, and post-accident testing provided in a courteous, cost effective, and confidential manner. Providing DOT and Non DOT Testing and Drug Free work place programs for Employers and individualsl in need of a Drug , Alcohol or DNA Test..