[Code of Federal Regulations] [Title 29, Volume 1] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 29CFR94.610] [Page 517] TITLE 29--LABOR PART 94_GOVERNMENTWIDE REQUIREMENTS FOR DRUG-FREE WORKPLACE (FINANCIAL A SSISTANCE)--Table of Contents Subpart F_Definitions Sec. 94.610 Controlled substance. 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.