physical differences among systems. Both new systems required less time and handling of the sample and fewer and easier technical steps in loading sediment onto the slide than did the open systems. Using low concentrations of erythrocytes and leukocytes, we observed comparable results with the R/S 2000, KOVA, and Uri-Slide systems. When we examined known urine samples containing mucus, erythrocytes, leukocytes, crystals, bacteria, fungi, casts, and epithelium, acceptable routine microscopic

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... alysis results were produced and confirmed using specialized cytodiagnostic urinalysis. This preliminary study indicates that the R/S 2000 provides an efficient alternative for laboratories that perform standardized wet sediment examinations on all urines.