KDIGO Acute Kidney Injury Staging

Using serum creatinine as reference, Kidney Disease Improving Global Outcomes (KDIGO) criteria has been endorsed by NKF Kidney Disease Outcomes Quality Initiative. Serum creatinine is the most practical and common method of assessing acute kidney injury

Stage 1

1.5 – 1.9 times baseline serum creatinine or
Increase in serum creatinine >= 0.3 mg/dl (>= 26.5 micromol/L)

Stage 2

2.0 – 2.9 times baseline serum creatinine

Stage 3

3.0 times baseline serum creatinine or
Increase in serum creatinine >= 4 mg/dl (>= 353.6 micromol/L) or
Initiation of kidney replacement therapy or
Decrease in eGFR to < 35 mL/min/1.73 sq. m