Illegal Drug
Illegal Drug means a controlled substance, as specified in Schedules I through V of the Controlled Substances Act, 21 U.S.C. 811, 812. The term illegal drugs does not apply to the use of a controlled substance in accordance with terms of a valid prescription, or other uses authorized by law.
Source
10 CFR § 707.4
Scoping language
For the purposes of this part, the following definitions apply: