### Question
What does radiopharmaceutical mean?


### Answer
**Radiopharmaceutical** has the following meaning in *42 U.S.C. § 2160d*:

> a radioactive isotope that—


(i) contains byproduct material combined with chemical or biological material

#### Citation:
  - *42 U.S.C. § 2160d*
  - Heading: **CHAPTER 23-DEVELOPMENT AND CONTROL OF ATOMIC ENERGY > Division A-Atomic Energy > SUBCHAPTER X-INTERNATIONAL ACTIVITIES**

