Except the nuclear fuel reprocessing and nuclear materials safeguards, at present there are two areas of an increased responsibility of nuclear scientists for their results: radioecology and human medicaments. At both of them, quality and trustfulness of results is of great importance for their end-users and may have serious economical and legal consequences. The trends of implementation of good laboratory and manufacturing practices under umbrella of international quality management standards like ISO 17025:2005 and ISO 9001:2000 in radiochemical and radiopharmaceutical laboratories are discussed as expanding to “good scientific practice”. The case studies of the Comenius University laboratory LARCHA authorized for radiochemical analysis, and the company BIONT producing medical radionuclides and PET radiopharmaceuticals are used as the examples.