Kidney Disease| Improving Global Outcomes (KDIGO) staging
| Stage | Creatinine | Urine output |
| 1 | 1.5–1.9× baseline OR Increase by 26 μmol/L within 48 hours | <0.5 mL/kg/hour for 6–12 hours |
| 2 | 2–2.9× baseline | <0.5 mL/kg/hour for more than 12 hours |
| 3 | 3× baseline OR Increase of 354 μmol/L ORRequiring renal replacement therapy | <0.3 mL/kg/hour for 24 hours OR Anuria for 12 or more hours |