A verified negative, a full Clearinghouse query, three years of previous-employer testing history, and a DQ file that holds together. Miss one and the hire is not compliant.
Sixty minutes on drugs, sixty on alcohol, for everyone who could order a reasonable-suspicion test. Most carriers discover the requirement during an audit.
Part 40 expressly bars an MRO from accepting a state authorisation as a legitimate medical explanation. What to tell drivers before they test, not after.
Your obligation to produce historic records does not transfer with your business. What to request, when to request it, and what to do if the old provider goes quiet.