Is radiation a controlled substance

Radiation itself is not classified as a controlled substance, but the materials and devices that produce or emit radiation, such as radioactive isotopes and certain radiation-emitting equipment, are regulated by government agencies. In the United States, the Nuclear Regulatory Commission (NRC) and the Environmental Protection Agency (EPA) oversee the use and safety of these materials to protect public health and the environment. Compliance with strict guidelines and licensing is required for handling and using radioactive materials.