[Code of Federal Regulations] [Title 49, Volume 1] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR32.610] [Page 390-391] TITLE 49--TRANSPORTATION Subtitle A--Office of the Secretary of Transportation PART 32_GOVERNMENTWIDE REQUIREMENTS FOR DRUG-FREE WORKPLACE (FINANCIAL ASSISTANCE)--Table of Contents Subpart F_Definitions Sec. 32.610 Controlled substance. Controlled substance means a controlled substance in schedules I through V of the Controlled Substances [[Page 391]] Act (21 U.S.C. 812), and as further defined by regulation at 21 CFR 1308.11 through 1308.15.