| Stage | Criteria |
|---|---|
| 1 | Creatinine rise of 26 micromol or more within 48 hours OR Creatinine rise of 50 - 99% from baseline within 7 days* (1.50 - 1.99 x baseline) OR Urine output** < 0.5 mL/kg/h for more than 6 hours |
| 2 | 100 - 199% creatinine rise from baseline within 7 days* (2.00 - 2.99 x baseline) OR Urine output** < 0.5 mL/kg/hour for more than 12 hours |
| 3 | 200% or more creatinine rise from baseline within 7 days* (3.00 or more x baseline) OR Creatinine rise to 354 micromol/L or more with acute rise of 26 micromol/L or more within 48 hours or 50% or more rise within 7 days OR Urine output** < 0.3 mL/kg/hour for 24 hours or anuria for 12 hours OR Any requirement for renal replacement therapy |
* The rise is known (based on previous blood tests) or presumed (based on history) to have occurred within 7 days.
** Measurement of urine output may not be practical in a primary care population, but can be considered in a person with a catheter.
Stage 3 baseline creatinine 61 (x3 baseline).
But can not be certain as unsure if the rise in creatinine was within 7 days.