Professional Toxicology Services (aka Protox)

Professional Toxicology Services (Protox) is a leading provider of compliance solutions for drug testing, specializing in collection sites, laboratories, and quality control products across the United States. Based in Lenexa, Kansas, we support MROs, TPAs, government agencies, and employers in meeting stringent DOT and NRC regulations.

For nearly two decades, Protox Services has been dedicated to ensuring accuracy and reliability in drug testing processes, offering a comprehensive suite of services including proficiency programs, blind quality controls, and specialized bluing products. We are committed to helping our clients maintain compliance and uphold the highest standards of testing integrity.