[Evaluation according to the NCCLS protocol of the Kodak-Ektachem procedure applied to the estimation of glucose and urea in plasma (author's transl)].

The study carried out consists of evaluating the results obtained for estimation of glucose and urea with a procedure the originality of which resides mainly in the use of preconditioned reagents, in the dry form, laid out on a support where the colour develops, proceeding to a reading by reflectometry and linearise the response by a procedure of calculation carried out by a microprocessor. The evaluation of the results obtained with the Kodak-Ektachem prototype for estimations of glucose and urea in the plasma was carried out according to the NCCLS protocol in the field of a coordinated European study. The imprecision was estimated at several levels of concentration after a study of intraserial and day to day reproducibility with and without contamination correction, the variation coefficients obtained from day to day are less than 3% when the concentrations of glucose and urea are higher than 5 mmol.