Table 4.
Urine tests results obtained 24 hours before up to 48 hours after the development of acute kidney injury
| Urine studies | n (%) |
|---|---|
| Urine sodium (mEq/l) | |
| <35a | 187 (65.6) |
| 35–50 | 47 (16.5) |
| >50 | 51 (17.9) |
| Specific gravity | 1.020 (1.010, 1.020) |
| Blood | |
| 0, negative or trace | 196 (36.2) |
| 1+, small | 96 (17.7) |
| 2+, moderate | 148 (27.3) |
| 3+, large | 102 (18.8) |
| Protein | |
| 0, negative, trace, or <30 | 168 (26.0) |
| 1+, 30–99 | 206 (31.9) |
| 2+, 100–299 | 194 (30.0) |
| 3+, 300–999 | 78 (12.1) |
| Urine microscopy, automated | |
| Positive with white blood cells, >5 | 221 (36.5) |
| Positive with red blood cells, >5 | 249 (40.9) |
Values are n (%) or median (interquartile range).
a
Urine sodium was reported as <20 mEq/l in a few of the enterprise hospitals.