Acceptable rates based on urine analyzers of different companies
| Instrument | No. (%) | pH | Protein | Glucose | Ketone | Bilirubin | Blood | Urobilinogen | Nitrite | Leukocyte |
|---|---|---|---|---|---|---|---|---|---|---|
| 1st proficiency test | ||||||||||
| YD | 660 (41.6) | 95.2 | 99.4 | 96.8 | 99.5 | 99.1 | 99.1 | 99.5 | 99.6 | 99.2 |
| Abbott | 415 (26.1) | 99.0 | 96.1 | 96.8 | 99.6 | 99.5 | 99.3 | 98.3 | 99.6 | 99.5 |
| Roche | 175 (11.0) | 95.7 | 99.4 | 98.9 | 99.9 | 99.6 | 99.3 | 90.6 | 99.9 | 99.9 |
| DFI | 149 (9.4) | 96.8 | 88.4 | 97.1 | 99.7 | 99.5 | 98.7 | 99.2 | 98.0 | 99.1 |
| Sysmex | 121 (7.6) | 99.8 | 100.0 | 100.0 | 100.0 | 99.6 | 99.6 | 98.6 | 100.0 | 100.0 |
| Siemens | 103 (6.5) | 88.1 | 100.0 | 99.8 | 99.8 | 70.9 | 100.0 | 90.0 | 99.5 | 99.5 |
| Eiken | 17 (1.1) | 92.7 | 100.0 | 100.0 | 99.9 | 95.0 | 98.5 | 100.0 | 96.7 | 100.0 |
| Arkray | 15 (0.9) | 98.3 | 100.0 | 100.0 | 100.0 | 76.7 | 88.3 | 76.7 | 100.0 | 100.0 |
| URIT | 11 (0.7) | 93.2 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 79.6 | 100.0 | 97.7 |
| 2nd proficiency test | ||||||||||
| YD | 661 (41.4) | 95.0 | 99.8 | 97.4 | 99.7 | 99.2 | 99.0 | 99.5 | 99.8 | 97.0 |
| Abbott | 428 (26.8) | 97.9 | 98.9 | 97.7 | 99.7 | 99.3 | 98.7 | 99.0 | 99.7 | 99.5 |
| Roche | 174 (10.9) | 94.4 | 99.7 | 99.3 | 100.0 | 99.7 | 99.0 | 90.9 | 99.0 | 99.3 |
| DFI | 145 (9.1) | 97.6 | 94.8 | 99.1 | 99.3 | 99.0 | 97.2 | 98.4 | 98.4 | 96.5 |
| Sysmex | 123 (7.7) | 100.0 | 100.0 | 100.0 | 100.0 | 99.8 | 99.8 | 98.2 | 75.0 | 99.8 |
| Siemens | 102 (6.4) | 88.1 | 100.0 | 99.8 | 100.0 | 72.8 | 99.8 | 90.5 | 100.0 | 99.3 |
| Eiken | 17 (1.1) | 92.7 | 100.0 | 98.5 | 100.0 | 90.0 | 98.5 | 100.0 | 100.0 | 100.0 |
| Arkray | 15 (0.9) | 100.0 | 100.0 | 100.0 | 100.0 | 75.0 | 100.0 | 75.0 | 100.0 | 100.0 |
| URIT | 11 (0.7) | 97.7 | 100.0 | 97.7 | 100.0 | 100.0 | 100.0 | 79.6 | 100.0 | 100.0 |
| 3rd proficiency test | ||||||||||
| YD | 681 (42.4) | 93.6 | 99.7 | 96.9 | 99.8 | 99.7 | 99.7 | 96.9 | 99.6 | 98.5 |
| Abbott | 425 (26.4) | 99.4 | 98.8 | 98.6 | 99.2 | 99.9 | 99.6 | 98.1 | 99.5 | 88.8 |
| Roche | 175 (10.9) | 99.6 | 100.0 | 99.7 | 100.0 | 100.0 | 100.0 | 94.7 | 96.8 | 99.9 |
| DFI | 140 (8.7) | 97.5 | 97.2 | 98.8 | 99.8 | 100.0 | 99.5 | 94.9 | 99.7 | 97.2 |
| Sysmex | 131 (8.2) | 99.8 | 100.0 | 100.0 | 56.3 | 100.0 | 100.0 | 61.1 | 99.8 | 52.3 |
| Siemens | 106 (6.6) | 98.4 | 100.0 | 98.1 | 98.8 | 100.0 | 99.8 | 79.3 | 100.0 | 99.1 |
| Eiken | 15 (0.9) | 93.3 | 100.0 | 100.0 | 100.0 | 96.2 | 100.0 | 100.0 | 100.0 | 100.0 |
| URIT | 12 (0.7) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 97.9 | 97.9 | 97.9 |
| Arkray | 11 (0.7) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 50.0 | 100.0 | 100.0 |
Values are presented as number (%) or percentage. Results with <90% accuracy are indicated in bold type. The instruments used were as follows: YD (YD Diagnostics, Yongin, Korea), Abbott (Abbott Laboratories, Abbott Park, IL, USA), Roche (Roche Diagnostics, Mannheim, Germany), DFI (DFI Co. Ltd., Gimhae, Korea), Sysmex (Sysmex Co., Kobe, Japan), Siemens (Siemens Healthcare, Erlangen, Germany), Eiken (Eiken Chemical Co., Tokyo, Japan), URIT (URIT Medical Electronic, Guangxi, China), and Arkray (Arkray Inc., Kyoto, Japan).