Acceptable rates based on urine analyzers of different companies
| Instrument | No. (%) | pH | Protein | Glucose | Ketone | Bilirubin | Blood | Urobilinogen | Nitrite | Leukocyte |
|---|---|---|---|---|---|---|---|---|---|---|
| 1st proficiency test | ||||||||||
| YD | 594 (38.9) | 96.1 | 98.8 | 98.9 | 99.3 | 98.7 | 95.4 | 99.7 | 99.3 | 99.1 |
| SD | 355 (23.2) | 94.0 | 97.8 | 99.0 | 99.1 | 99.6 | 99.0 | 99.4 | 99.1 | 98.7 |
| Roche | 218 (14.3) | 91.9 | 96.8 | 100.0 | 99.1 | 98.3 | 98.2 | 98.6 | 99.4 | 99.7 |
| DFI | 139 (9.1) | 89.1 | 98.1 | 98.9 | 97.1 | 98.3 | 99.0 | 99.5 | 98.9 | |
| Siemens | 92 (6.0) | 100.0 | 99.5 | 99.7 | 92.1 | 99.7 | 99.5 | 99.7 | 99.5 | |
| Sysmex | 59 (3.9) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | ||
| Eiken | 37 (2.4) | 91.9 | 98.8 | 100.0 | 89.9 | 100.0 | 100.0 | 100.0 | ||
| Arkray | 23 (1.5) | 95.7 | 97.9 | 98.9 | 98.9 | 96.8 | 100.0 | 98.9 | 100.0 | 100.0 |
| Beckman | 10 (0.7) | 100.0 | 100.0 | 100.0 | 100.0 | 95.0 | 97.5 | 100.0 | ||
| 2nd proficiency test | ||||||||||
| YD | 636 (39.8) | 96.8 | 99.5 | 99.5 | 94.8 | 98.0 | 96.8 | 99.5 | 99.3 | 99.0 |
| SD | 370 (23.2) | 94.0 | 98.3 | 99.0 | 95.8 | 98.8 | 97.8 | 98.8 | 99.0 | 98.5 |
| Roche | 216 (13.5) | 100.0 | 100.0 | 91.3 | 100.0 | 99.3 | 98.8 | 99.8 | 99.8 | |
| DFI | 145 (9.1) | 91.0 | 98.8 | 98.3 | 97.8 | 98.8 | 99.8 | 99.3 | 99.3 | |
| Siemens | 96 (6.0) | 99.8 | 99.8 | 94.5 | 91.5 | 100.0 | 99.3 | 99.8 | 99.0 | |
| Sysmex | 65 (4.1) | 99.5 | 100.0 | 100.0 | 99.0 | 100.0 | 100.0 | 100.0 | 100.0 | |
| Eiken | 38 (2.4) | 92.5 | 99.3 | 100.0 | 99.3 | 90.8 | 100.0 | 100.0 | 100.0 | |
| Arkray | 22 (1.4) | 97.8 | 100.0 | 98.8 | 100.0 | 100.0 | 99.0 | 99.0 | 99.0 | |
| Beckman | 10 (0.6) | 100.0 | 100.0 | 100.0 | 100.0 | 97.5 | 100.0 | |||
| 3rd proficiency test | ||||||||||
| YD | 615 (39.5) | 96.0 | 99.3 | 97.5 | 98.8 | 99.5 | 99.0 | 99.5 | 100.0 | 99.3 |
| SD | 369 (23.7) | 98.0 | 98.3 | 97.0 | 99.0 | 99.5 | 98.0 | 99.0 | 100.0 | 99.5 |
| Roche | 201 (12.9) | 94.0 | 100.0 | 99.5 | 99.8 | 99.8 | 99.0 | 96.3 | 99.5 | 100.0 |
| DFI | 139 (8.9) | 96.3 | 91.3 | 99.8 | 99.0 | 98.8 | 99.0 | 99.0 | 100.0 | 98.5 |
| Siemens | 100 (6.4) | 78.8 | 100.0 | 100.0 | 97.5 | 95.3 | 100.0 | 95.0 | 100.0 | 100.0 |
| Sysmex | 77 (5.0) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 99.8 | 100.0 | ||
| Eiken | 25 (1.6) | 92.5 | 99.3 | 99.3 | 97.5 | 100.0 | 97.5 | 100.0 | 100.0 | |
| Arkray | 19 (1.2) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 98.8 | ||
| Beckman | 10 (0.6) | 100.0 | 100.0 | 100.0 | 95.0 | 97.5 | 100.0 | 100.0 |
Values are presented as number (%). The results <90% of accuracy were indicated in the bold type. The instruments used were from the following companies: YD (YD Diagnostics, Yongin, Korea), SD (Standard Diagnostics, Seoul, Korea), Roche (Roche Diagnostics, Mannheim, Germany), DFI (DFI Co. Ltd., Gimhae, Korea), Siemens (Siemens Healthcare, Erlangen, Germany), Eiken (Eiken Chemical Co., Tokyo, Japan), Symex (Symex Co., Kobe, Japan), Arkray (Arkray Inc., Kyoto, Japan), and Beckman (Beckman Coulter Inc., Brea, CA, USA).