Table 2: AKIN Classification [14].
| STAGE | CREATININE (MG/DL) | URINE OUTPUT (UO) (ML/KG/HR) | CATEGORY |
| I | Cr × 1.5 or Cr equal to or greater than 0.3 over < 48 hours | < 0.5 for 6 hours | Risk |
| II | Cr increased 2-3 times or GFR | < 0.5 for 12 hours | Injury |
| III | Cr × 3 or Cr equal to or greater than 4 with an increase equal to or greater than 0.5 or patients with renal replacement therapy | < 0.3 ml for 24 hours Anuria for 12 hours | Failure |