Table 2.

Comparison of grading systems for AKI

SystemGradeDescription
CTCAEGrade 1Higher than ULN to 1.5× ULN
Grade 2>1.5–3.0× baseline; >1.5–3.0× ULN
Grade 3>3.0× baseline; >3.0–6.0× ULN; hospitalization indicated
Grade 4>6.0× ULN; life-threatening consequences; RRT indicated
Grade 5Death
KDIGOStage 1Increase in SCr of ≥0.3 mg/dl within 48 h or 1.5–1.9× baseline
Stage 2Increase in SCr to 2–2.9× baseline
Stage 3Increase in Cr to 3× baseline or to ≥4.0 mg/dl or initiation of RRT
  • CTCAE, Common Terminology Criteria for Adverse Events; ULN, upper limit of normal; SCr, serum creatinine.