[Code of Federal Regulations] [Title 41, Volume 3] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 41CFR105-74.610] [Page 578] TITLE 41--PUBLIC CONTRACTS AND PROPERTY MANAGEMENT CHAPTER 105--GENERAL SERVICES ADMINISTRATION PART 105-74_GOVERNMENTWIDE REQUIREMENTS FOR DRUG-FREE WORKPLACE (FINANCIAL ASSISTANCE)--Table of Contents Subpart F_Definitions Sec. 105-74.610 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.