### Question
How is the "controlled substance" defined?


### Answer
The term **controlled substance** is defined in *41 U.S.C. § 8101* as follows -

> a controlled substance in schedules I through V of section 202 of the Comprehensive Drug Abuse Prevention and Control Act of 1970 (21 U.S.C. 812)

#### Citation:
  - *41 U.S.C. § 8101*
  - Heading: **Subtitle IV-Miscellaneous > CHAPTER 81-DRUG-FREE WORKPLACE**

