Employee Screening Services is the most comprehensive mobile provider of drug and alcohol testing services in the Midwest. We are committed to providing the most professional, convenient and cost-effective services at the highest level of quality. Services include on-site drug and alcohol testing by certified technicians; total DOT compliance services; drug and alcohol education; supervisor training; pre-employment, random, 24-hour drug and alcohol testing programs. In addition, ESS offers MVR checks, background checks, DOT and workplace physicals, hair follicle testing, and DNA Paternity testing. ESS serves clients throughout Missouri, Oklahoma, Kansas, Arkansas, Illinois, and Iowa.