- Minimally a stage 1 Kidney Injury according to AKIN creatinine criteria: Increase in serum creatinine ≥26.2µmol/L (0.3mg/dL) or increase to ≥150% (≥1.5 -fold) from baseline in the previous 48 hours in the absence of primary underlying renal disease and where baseline creatinine is less than 150 µmol/L) OR