Ann Clin Microbiol 2021;24:83-96. Evaluation of Five Automated Urine Analyzers as Screening Instruments for Enhancing Diagnostic Efficiency in Urinary Tract Infection
| Parameter | Analyzer | Cut-off value* (%) | ||||
|---|---|---|---|---|---|---|
| Sensitivity 95% | PPV 70% | |||||
| M | F | M | F | |||
| WBC (/µL) | UF-5000 | 0.7 (94.1) | 0.2 (97.9) | 339.4 (80.0) | 544.8 (75.0) | |
| UAS800 | > 0 (86.7) | > 0 (68.1) | 334.0 (75.0) | 208.6 (72.7) | ||
| Cobas® u701 | > 0 (88.2) | > 0 (80.4) | 475.9 (80.0) | 347.5 (71.4) | ||
| iQ®200SPRINT | > 0 (82.4) | > 0 (87.2) | 321.2 (80.0) | 180.4 (70.0) | ||
| URiSCAN® PlusScope | > 0 (76.5) | > 0 (59.6) | 77.9 (71.4) | 69.7 (72.7) | ||
| Bacteria (/µL) | UF-5000 | > 0 (94.1) | > 0 (95.7) | 152.4 (75.0) | 127 (71.1) | |
| UAS800 | > 0 (87.5) | > 0 (93.6) | 3,293 (50.0) | 657.8 (70.6) | ||
| iQ®200SPRINT (ASP) | 189 (94.1) | 345 (95.7) | 31,327 (60.0) | 11,171 (72.7) | ||
*If sensitivity or PPV did not meet each target variable, the cut-off values were obtained to maximize the same.
†The Cobas® u701 and URiSCAN® PlusScope did not display the quantitative bacterial counts when our experiment was conducted. The iQ®200SPRINT provided ASP values instead of bacterial counts.
Abbreviations: PPV, positive predictive value; WBC, white blood cell; ASP, all small particles.