28 C.F.R. § 83.610 Controlled substance.
Title 28 - Judicial Administration
Controlled substance means a controlled substance in schedules I through V of the Controlled Substances Act (21 U.S.C. 812), and as further defined by regulation at 21 CFR 1308.11 through 1308.15.
Title 28: Judicial Administration
PART 83—GOVERNMENT-WIDE REQUIREMENTS FOR DRUG-FREE WORKPLACE (GRANTS)
Subpart F—Definitions
§ 83.610 Controlled substance.