After reviewing this tutorial, the user should be able to list the various types of impurities found in the eluate collected from the Mo-99/Tc-99m generator and give an example of each; should be able to identify the various classes of impurities found in radiopharmaceuticals and give an example of each; should be able to describe in detail how QC testing is performed on the eluate and on Tc-99m radiopharmaceuticals; should be able to state the specifications for each of these tests and what action is required if there is a test failure; should be able to list the 4 QC tests performed on a dose calibrator and required frequency of performance; should be able to describe how each test is performed, state the legal specification, and describe the action required if there is a test failure; should be able to state the difference between agreement states and non-agreement states; should know the basics of licensure by the NRC and State regulatory agencies; should be able to list the various requirements for maintaining log books in the lab and the required frequency of entry; should be familiar with basic rules of radiation safety, e.g., to describe what precautions and action must be taken when there is a spill or contamination is found on a technologist's hands; and should be able to define "misadministration" according to the new rules, and to state what one must do to document and report the occurrence.