Based on the analysis of the indices accepted for the evaluation of scientific work in research institutes, a suggestion was proposed that the putative instead of realized value of the scientific product should be evaluated. This implies employment of such bibliometric techniques of analysis of the volume and quality of the used information as: total number of references in scientific works, reference to the most recent publications and foreign sources, and the interdisciplinary index rated according to the subject-relation of the cited works. Studies of selected indices based on the analysis of one-year scientific journal publications and of manuscripts sent for print, as well as of reports made by the Kiev Research Institute of Otorhinolaryngology of UkrSSR Ministry of Health and by the Research Institute of Hematology of BSSR Ministry of Health, paralleled with a comprehensive consideration of the reference peculiarities and expert evaluation of the scientific material proper, allowed for making a conclusion on the importance of the role played by the bibliometric data in making the expert formal and objective and in operative evaluation of the activity of scientific communities and/or trends. This is of special significance for information and scientific policy making. Such investigations may be carried out by expert information workers.