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


### Answer
The term **controlled substance** is defined in *51 U.S.C. § 31102* as the following:

> any substance under section 102(6) of the Controlled Substances Act (21 U.S.C. 802(6)) specified by the Administrator

#### Citation:
  - *51 U.S.C. § 31102*
  - Heading: **Subtitle III-Administrative Provisions > CHAPTER 311-SAFETY**

