Actions prohibited to the MRO:
(1) consideration of any test results not part of DOT drug testing such as additional drug tests, genetic tests, etc. Tests performed done as part of the medical evaluation of insufficient urine production may be considered.
(2) helping to resolve factual disputes between the collector and the employee not involving information recorded on the chain of custody form (CCF)
(3) helping to resolve a dispute between the employee and employer about whether the employee should have been selected to have a random, for cause or post-accident drug test
The MRO must not accept any of the following as a legitimate medical explanation for a non-negative test result:
(1) presence of an adulterant that is never physiologic such as soap, bleach or gluteraldehyde
(2) when the urine creatinine is undetectable or extremely low (< 2 mg/dL)
(3) a physician or employer told the employee to use a Schedule I drug
(4) presence of phencyclidine (PCP) or 6-acetylmorphine (6-AM)
(5) hemp oil to explain the presence of THC metabolites
(6) coca leaf tea to explain the presence of cocaine
(7) passive inhalation, spiked drink or unknowing ingestion
