40.123—What are the MRO's responsibilities in the DOT drug testing program?

As an MRO, you have the following basic responsibilities:
(1) Ensuring the review of the CCF on all specimen collections for the purposes of determining whether there is a problem that may cause a test to be cancelled (see §§ 40.199-40.203 ). As an MRO, you are not required to review laboratory internal chain of custody documentation. No one is permitted to cancel a test because you have not reviewed this documentation;