An evaluation of the Kodak glucose/ BUN analyser including experience with proposed testing protocols.

concept in clinical chemistry, namely the use of dry chemistry films to be used initially for colorimetric analysis [2,3]. The glucose and urea methods were evaluated in this study following the guidelines by the National Committee for Clinical Laboratory Standards (NCCLS) [1] which are recommendations for goals to be sought by manufacturers. This evaluation protocol is designed to provide a multipurpose evaluation framework for a wide range of methods and instruments and is in three sections. PSEP-2 (proposed standard for establishing performance claims) describes the four-week baseline period which is used to establish confidence limits for the controls used throughout the study. PSEP-3 details the precision study and PSEP-4 describes the comparison of methods experiment. The Kodak Ektachem GLU/BUN analyser is a microprocessor controlled discrete analyser which operates in single or dual test mode. The instrument used in the present study was an engineering model used in the USA and Europe and was designed to evaluate the concept of quantitative chemical analysis using multilayered reagents. It was used according to the operators manual. The instrument was modified to give urea values, as opposed to blood urea nitrogen values, and was calibrated in mmol/L.