DOT Drug & Alcohol Testing,
Simplified

Building on the trusted legacy of Diversified Drug Testing (DDT), our Drug & Alcohol Testing Division delivers complete testing programs for DOT-regulated employers, schools, athletic departments, and safety-conscious workplaces. When DDT joined Diversified Safety & Compliance, we expanded our capabilities while preserving the responsive service and deep expertise that DDT customers have relied on for years. With access to 3,000+ collection locations nationwide, drivers and employees can complete testing conveniently wherever they are—ideal for OTR drivers and distributed workforces.

Whether you're a motor carrier managing DOT compliance, a school district implementing student-athlete testing, or an employer building a drug-free workplace program, our testing-as-a-service model eliminates the complexity. We provide DOT-qualified MROs, certified breath alcohol technicians, flexible collection options, and complete documentation—without the overhead of an in-house testing department. From consortium enrollment to emergency response at 2 AM, the same team you trusted at DDT now delivers even more comprehensive compliance solutions under the DSC banner.