Implementation Guidelines - Federal Transit Administration - U.S. ...

Medical Review Officer (MRO) A person who is a licensed physician and is responsible
for receiving and reviewing laboratory results generated
by an employer's drug testing program and evaluating
medical explanations for certain drug test results.
Negative test result Drug test with a verified presence of the identified drug
or its metabolite below the minimum levels specified in
49 CFR Part 40, as amended. An alcohol concentration
of less than 0.02 BAC is a negative test result.
Non-negative test Test result found to be adulterated, substitute, invalid, or
positive for drug/drug metabolites. Non-negative results
are considered a positive test or refusal to test if MRO
cannot determine legitimate medical explanation.
Office of Drug and Alcohol Policy An office in the Office of the Secretary DOT, that is
and Compliance (ODAPC) responsible for coordinating drug and alcohol testing
program matters within the Department and providing
information concerning the implementation of 49 CFR
Part 40.
Performing (a safety sensitive A covered employee is considered to be performing a
function) safety-sensitive function and includes any period in
which he or she is actually performing, ready to
perform, or immediately available to perform such
functions.
Permanent employee An employee hired for a period of more than 120 days.
Permanent record book A permanently bound book in which identifying data on
each specimen collected at a collection site are
permanently recorded in the sequence of collection.
May be used in conjunction with a modified urine
custody and control form to document collection.
Positive rate The sum of the annual number of positive results for
random drug tests conducted under this part plus the
annual number of refusals to submit to a random drug
test authorized under this part divided by the sum of the
annual number of random drug tests conducted under
this part plus the annual number of refusals to submit to
a random drug test authorized under 49 CFR Part 655.
Positive test Drug test with a verified presence of the identified drug
or its metabolite at or above the minimum levels
Appendix H. Terms and Definitions H-8 August 2002