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Table 1 KDIGO criterion for diagnosis and staging of AKI[8]

From: Actual versus ideal body weight for acute kidney injury diagnosis and classification in critically Ill patients

Stage Serum creatinine Urine output
1 1.5-1.9 times baseline OR 0.3 mg/dl increase < 0.5 ml/kg/h for 6-12 hours
2 2.0-2.9 times baseline < 0.5 ml/kg/h for ≥12 hours
3 3.0 times baseline OR Increase in serum creatinine to ≥4.0 mg/dl OR initiation of replacement therapy < 0.3 ml/kg/h for ≥24 hours OR Anuria for ≥12 hours