Responsiveness is a quality indicator presented by the World Health Organization in the field of health evaluation. Therefore, the objective of this study was to develop an instrument to evaluate the clients' opinions regarding the responsiveness of the nursing service of a public university hospital. The research was developed in the following stages: developing the instrument based on a literature review, apparent validation, applicability test and pilot test. The instrument allows the identification of the clients' expectations and perceptions, subdivided into aspects related to the Structure Process and Outcomes, measured using a 7-point Likert scale. Based on the results of the pilot test it was possible to establish a numerical indication of the Relative Satisfaction Rate and its interval. The study promoted the development of an acceptability percentage scale for the interval, which indicates the extent to which the nursing service meets the clients' expectations.