Radiopharmaceuticals are unique medicinal formulations that contain radioisotopes and are used in clinical applications for diagnosis and therapy. The facilities and procedures for production, use, and storage of radiopharmaceuticals are subject to license approval either by national or regional authorities such as Nuclear Regulatory Commission (NRC) of U.S, Atomic Energy Commission (AEC) of U.S., or Atomic Energy Regulatory Board (AERB) of India. Licensing includes compliance regarding pharmaceutical preparations and use of radioactive materials. A radiopharmaceutical preparation is a medicinal product in a ready-to-use format containing a radionuclide suitable for human use. A kit for radiopharmaceutical preparation encloses a vial containing the non-radionuclide components of a radiopharmaceutical preparation in a sterilized and validated form, to which the appropriate radionuclide is added. Radiopharmaceuticals derived from the kits are intended to be used within 12 hours of preparation.