California Code, Health and Safety Code - HSC § 107150

“Nuclear medicine technology” means that technology applied under the supervision of a physician and surgeon or a licensed clinical bioanalyst, when performing in vitro procedures, that pertains to the utilization of radiopharmaceuticals for the diagnosis and treatment of disease in humans and includes: (1) the standardization of radiopharmaceutical dosages prior to administering the preparation of radiopharmaceutical agents in accordance with department regulations, (2) the administration of radiopharmaceuticals in accordance with statute or regulation, and (3) the calibration and use of radiation detection instruments and equipment to obtain clinical information. Nuclear medicine technology includes in vitro tests performed in a licensed clinical laboratory that use a radioactive marker substance not administered to human subjects and in vivo nuclear medicine procedures that involve administration of a radioactive marker substance to humans.