European multicentre evaluation of the super aution SA-4220 urinalysis analyser

A multicentre evaluation of the urine test strip analyser Super Aution-4220 was carried out in six laboratories. The analytical performance of the ins trument with regard to imprecision, linearity, detection limit, drift, carr y-over and method comparison was studied. Using the Aution stick 8 test str ip the pH, glucose, protein, ketones, bilirubin, blood, urobilinogen and le ukocyte esterase were analysed. Specific gravity measurements were performe d by refractive index method. Within-run and between-run imprecision determ ined at three levels of analyte were good. No carry-over was observed. Obta ined results were linear through all the described analytical range. No sig nificant drift was detected. Method comparison with some quantitative metho ds was performed and showed a good correlation with most of the analytes. T he study of interferences showed minor interferences by common therapeutic drugs with the measurement of some analytes. During the assessment period o f about 6 months no breakdown occurred in any laboratory. The Super Aution urine analyser appeared to be a highly automated analyser of urinary test s trips. The operation was simple and the maintenance required only a few min utes a day.