The performance evaluation of UF-1000i urinary sediment analyzer in detecting the fresh urine and constant quality control product

Objective:To evaluate the main performance index of UF-1000i urinary sediment analyzer.Methods:The precision, contaminative rate, linear range and uncertainty of the UF-1000i were analyzed by detecting fresh urine and constant quality control product.Results:The within-run precisions(CV) of UF-1000i in detecting WBC, RBC, BACT, EC, CAST were 4.0%-7.6%, 4.4%-6.6%, 5.9%-8.9%, 5.7%-10.7% and 7.0%-13.5%, respectively.The inter-day precisions of UF-1000i in detecting WBC, RBC, BACT, EC, CAST were 2.1%-6.3%, 4.8%-5.3%, 7.2%-9.7%, 8.0%-15.0%, 9.5%-14.1%, respectively.The contaminative rates of UF-1000i in detecting WBC, RBC, BACT, EC, CAST in fresh urinary were 0.120%, 0.039%, 0.084%, 0.700% and 1.640%, respectively.The levels of WBC, RBC, BACT, EC and CAST in urinary were 1.4-5 097/μl, 1.2-4 885/μl, 8-16 540/μl, 2.9-204/μl and 1.2-19.4/μl, respectively, which was good linear correlation.The relative deviations of UF-1000i in detecting WBC, RBC, BACT, EC and CAST were 2.4%-9.0%, 0.9%-9.8%, -18.2%--18.0%, -13.5%--5.1% and -3.7%--6.8%, respectively.Conclusions:The main performance index of UF-1000i is qualified, which can be used to analyze the formed elements of urinary.