Clinical application analysis on the performance of Sysmex UF-1000i automated urinary sediment analyzer

Objective To investigate the clinical application values of Sysmex UF-1000i automated urinary sediment analyzer.Methods 2 000 urine samples were determined by UF-1000i automated urinary sediment analyzer and microscopy.The results were contrasted,and the reasons of false positive in UF-1000i analyzer were analyzed.Results When using Sysmex UF-1000i analyzer,the detecting sensitivities of white blood cell(WBC),red blood cell(RBC),cast and small round epithelial cell were 99.2%,99.3%,94.7% and 95.1%,and the false positive rates of them were 5.8%,6.1%,10.4% and 4.6%,respectively.Many factors,like viscose rayon,crystals,bacteria,yeast-like fungus,small round epithelial cells,fat droplets and lecithin body may affect the determination of urine formed elements.Conclusions It is an effectual method to detect urinary sediments by Sysmex UF-1000i analyzer.It is very important to observe sediments by microscopy when all above interferences are positive or increase.