Stage

Measures acute renal failure (any of the following for each stage)

Increase in plasma creatinine

Decrease in diuresis

Renal replacement therapy

1

≥0.3 mg/dL (26.52 micromoles/L) or 1.5 - 1.9 times baseline

0.5 mL/kg/h for 6 - 12 h

Not indicated

2

2 - 2.9 times baseline

<0.5 mL/kg/hr for ≥12 h

Not indicated

3

≥4.0 mg/dL (353.60 micromoles/L) or ≥3 times baseline

0.3 mL/kg/hr for ≥24 hours or anuria for ≥12 hrs

Indicated