Category	GFR Criteria	Urine Output (UO) Criteria
Risk	Increased creatinine x1.5 or GFR decrease > 25%	UO < 0.5ml/kg/h x 6 hr	High Sensitivity     High Specificity
Injury	Increased creatinine x2 or GFR decrease > 50%	UO < 0.5ml/kg/h x 12 hr
Failure	Increase creatinine x3 or GFR decrease > 75%	UO < 0.3ml/kg/h x 24 hr or Anuria x 12 hrs
Loss	Persistent ARF = complete loss of kidney function > 4 weeks
ESKD	End Stage Kidney Disease (> 3 months)

GFR; Glomerular Filtration Rate

ARF; Acute Renal Failure

ESKD; End Stage Kidney Disease

References:

1. Bellomo R, Kellum JA, Mehta R, Palevsky PM, Ronco C. Acute Dialysis Quality Initiative II: the Vicenza conference. Curr Opin Crit Care. 2002 Dec;8(6):505-8. [Medline]
2. Bellomo R, Ronco C, Kellum JA, Mehta RL, Palevsky P; Acute Dialysis Quality Initiative workgroup. Acute renal failure - definition, outcome measures, animal models, fluid therapy and information technology needs: the Second International Consensus Conference of the Acute Dialysis Quality Initiative (ADQI) Group. Crit Care. 2004 Aug;8(4):R204-12. Epub 2004 May 24. [Medline]