DOT allows employers to use service agents, including C/TPAs, but the employer remains responsible for compliance with applicable requirements.[1]
A testing invoice is not a compliance system
A program can include collections, laboratory testing, and result reporting while still leaving gaps in random administration, Clearinghouse responsibilities, policy alignment, records, supervisor training, or employer follow-through. The important question is not simply whether testing is being purchased. It is whether the entire program is being managed coherently.
Know what your provider actually manages
Different service providers perform different functions. Some coordinate tests only. Others administer random programs, maintain records, or perform permitted Clearinghouse functions. Employers should understand which responsibilities are included and which remain with the employer.
Records matter when someone asks for them
Part 40 identifies records that service agents may maintain for employers, but the employer must still be able to meet applicable record-production and compliance responsibilities.[2] A program that feels organized day to day can look very different when documentation is requested.
A C/TPA should reduce operational burden, not create ambiguity
The value of program management is consistency: clear responsibilities, coordinated testing, dependable random administration, accessible records, and a knowledgeable point of contact when an event occurs.
Skyside Compliance manages DOT drug and alcohol testing programs for employers and owner-operators nationwide. Non-DOT program services are available in Washington and California, with additional states supported upon request following a state-specific compliance review.
Ask Skyside to review your current program[1] U.S. DOT, 49 CFR Part 40 §40.15
[2] U.S. DOT, 49 CFR Part 40 §40.349
Sources checked: August 30, 2026.