Acceptable rates based on urine analyzers of different manufacturers
| Instrument | No. (%) | pH | Protein | Glucose | Ketone | Bilirubin | Blood | Urobilinogen | Nitrite | Leukocyte |
|---|---|---|---|---|---|---|---|---|---|---|
| 1st proficiency test | ||||||||||
| YD | 630 (41.3) | 94.5 | 99.5 | 97.1 | 98.4 | 99.6 | 99.2 | 99.4 | 99.6 | 95.9 |
| SD | 396 (25.9) | 97.2 | 98.5 | 97.2 | 98.4 | 99.3 | 99.5 | 99.3 | 99.6 | 99.5 |
| Roche | 195 (12.8) | 90.9 | 100.0 | 99.5 | 99.9 | 100.0 | 99.8 | 96.8 | 99.8 | 99.4 |
| DFI | 137 (9.0) | 95.1 | 90.3 | 99.5 | 99.3 | 99.1 | 99.1 | 99.3 | 99.5 | 99.3 |
| Siemens | 102 (6.7) | 87.3 | 100.0 | 100.0 | 93.9 | 94.4 | 99.8 | 94.1 | 99.5 | 99.7 |
| Sysmex | 85 (5.6) | 99.7 | 100.0 | 100.0 | 79.4 | 100.0 | 100.0 | 95.0 | 99.7 | 99.7 |
| Eiken | 31 (2.0) | 85.5 | 100.0 | 99.2 | 98.2 | 86.6 | 100.0 | 99.1 | 100.0 | 100.0 |
| Arkray | 18 (1.2) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 75.0 | 99.8 | 100.0 |
| Beckman | 9 (0.6) | 100.0 | 100.0 | 100.0 | 100.0 | 77.8 | 94.5 | 83.3 | 100.0 | 97.2 |
| 2nd proficiency test | ||||||||||
| YD | 644 (40.3) | 96.1 | 99.5 | 96.7 | 98.6 | 99.6 | 99.5 | 99.7 | 99.7 | 97.4 |
| SD | 398 (24.9) | 98.1 | 97.5 | 96.3 | 99.3 | 99.6 | 99.3 | 99.0 | 99.6 | 99.8 |
| Roche | 192 (12.0) | 94.8 | 100.0 | 99.6 | 99.9 | 99.9 | 99.8 | 98.6 | 99.9 | 99.2 |
| DFI | 140 (8.8) | 94.6 | 85.5 | 99.5 | 99.5 | 99.3 | 98.8 | 98.7 | 98.2 | 99.7 |
| Siemens | 98 (6.1) | 95.7 | 100.0 | 95.4 | 100.0 | 89.6 | 99.8 | 94.4 | 99.7 | 100.0 |
| Sysmex | 91 (5.7) | 100.0 | 100.0 | 100.0 | 100.0 | 99.2 | 99.7 | 99.5 | 100.0 | 100.0 |
| Eiken | 29 (1.8) | 87.9 | 100.0 | 98.3 | 100.0 | 91.4 | 100.0 | 100.0 | 99.1 | 100.0 |
| Arkray | 19 (1.2) | 100.0 | 100.0 | 100.0 | 100.0 | 75.0 | 100.0 | 75.0 | 98.7 | 97.4 |
| Beckman | 9 (0.6) | 100.0 | 100.0 | 100.0 | 97.2 | 83.3 | 97.2 | 83.3 | 100.0 | 100.0 |
| 3rd proficiency test | ||||||||||
| YD | 650 (41.8) | 96.7 | 99.3 | 97.1 | 99.4 | 99.6 | 99.5 | 99.6 | 99.5 | 98.3 |
| Abbott | 337 (21.7) | 98.1 | 96.8 | 97.2 | 99.6 | 99.8 | 99.6 | 99.4 | 99.7 | 99.5 |
| Roche | 189 (12.2) | 76.3 | 99.9 | 99.6 | 100.0 | 100.0 | 99.9 | 98.4 | 100.0 | 99.6 |
| DFI | 149 (9.6) | 95.6 | 87.9 | 99.0 | 99.8 | 98.3 | 97.7 | 99.0 | 97.4 | 98.0 |
| Siemens | 103 (6.6) | 84.0 | 100.0 | 93.9 | 100.0 | 86.4 | 98.3 | 93.0 | 100.0 | 99.8 |
| Sysmex | 103 (6.6) | 78.9 | 100.0 | 100.0 | 100.0 | 99.8 | 99.8 | 97.8 | 99.8 | 100.0 |
| Eiken | 23 (1.5) | 88.0 | 100.0 | 96.7 | 100.0 | 86.9 | 97.8 | 100.0 | 97.6 | 100.0 |
| Arkray | 17 (1.1) | 100.0 | 100.0 | 100.0 | 100.0 | 75.0 | 100.0 | 72.1 | 100.0 | 100.0 |
| Beckman | 10 (0.6) | 100.0 | 97.5 | 97.5 | 100.0 | 82.5 | 97.5 | 90.0 | 100.0 | 100.0 |
Values are presented as percentages or numbers (%). The results with <90% accuracy are indicated in bold. The instruments used were as follows: 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), Beckman Coulter Inc. (Brea, CA, USA), and Abbott (Abbott Laboratories, Abbott Park, IL, USA).