Nephrology · ICU and Critical Care
RIFLE Criteria for Acute Kidney Injury calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Allowed range: 0.1–15 mg/dL
Allowed range: 0.1–30 mg/dL
Allowed range: 0–100 %
Use 0 if GFR change is not known. Risk >25%, Injury >50%, Failure >75%.
Allowed range: 0–10 mL/kg/h
Allowed range: 0–168 h
Duration used for the <0.5 mL/kg/h (6 h Risk, 12 h Injury) and <0.3 mL/kg/h for 24 h Failure criteria.
Allowed range: 0–168 h
Allowed range: 0–52 weeks
More than 4 weeks is RIFLE Loss. 12 weeks or longer is ESRD.
Result
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Clinical inputs
- Baseline serum creatinine (mg/dL)Accepted range: 0.1 to 15
- Current serum creatinine (mg/dL)Accepted range: 0.1 to 30
- GFR decrease from baseline (%)Accepted range: 0 to 100
- Urine output (mL/kg/h)Accepted range: 0 to 10
- Hours at the current urine-output rateAccepted range: 0 to 168
- Hours of anuriaAccepted range: 0 to 168
- Weeks of complete loss of kidney functionAccepted range: 0 to 52
- End-stage kidney disease for more than 3 months
Primary source
Bellomo R et al. Acute renal failure - definition, outcome measures, animal models, fluid therapy and information technology needs: the Second International Consensus Conference of the ADQI Group. Crit Care. DOI: 10.1186/cc2872. PMID: 15312219. Scope: Worst RIFLE class. Risk: creatinine ×1.5 or GFR decrease >25% or urine <0.5 mL/kg/h for 6 h. Injury: creatinine ×2 or GFR decrease >50% or urine <0.5 mL/kg/h for 12 h. Failure: creatinine ×3, or creatinine ≥4 mg/dL with acute rise ≥0.5 mg/dL, or GFR decrease >75%, or urine <0.3 mL/kg/h for 24 h, or anuria for 12 h. Loss: complete loss of kidney function >4 weeks. ESRD: end-stage kidney disease >3 months. (2004)
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