» Technetium Tc 99m Medronate Injection is a sterile, aqueous solution, suitable for intravenous administration, of sodium medronate and stannous chloride or stannous fluoride that is labeled with radioactive Tc 99m. It contains not less than 90.0 percent and not more than 110.0 percent of the labeled amount of Tc 99m as stannous medronate complex expressed in megabecquerels (microcuries or millicuries) per mL at the date and time indicated in the labeling. It may contain antimicrobial agents, antioxidants, and buffers. Other chemical forms of radioactivity do not exceed 10.0 percent of the total radioactivity.