Controlled Substance Managers, Inc., based in Chicago, IL, specializes in drug testing services designed to support workplace safety and compliance. Their experienced team provides a range of testing options, including pre employment, random, and post accident screenings, ensuring accurate and timely results. Committed to confidentiality and professionalism, Controlled Substance Managers, Inc. helps businesses maintain a drug free environment while protecting their workforce. With a focus on quality service, they are a trusted partner for all drug testing needs.