What happens when an individual is unable to provide a sufficient amount of urine for a pre-employment follow-up or return-to-duty test because of a permanent or long-term medical condition?

What is a refusal to take a DOT drug test, and what are the consequences?

What happens when an employee does not provide a sufficient amount of urine for a drug test?

What happens when an employer receives a report of a dilute specimen?

What problems always cause a drug test to be cancelled?

What problems always cause a drug test to be cancelled and may result in a requirement for another collection?

What problems cause a drug test to be cancelled unless they are corrected?

How are drug test problems corrected?

What is the effect of a cancelled drug test?

What problem requires corrective action but does not result in the cancellation of a test?

What procedural problems do not result in the cancellation of a test and do not require correction?

Are drug tests other than urine permitted under the regulations?