Table 2: KDIGO classification of the stages of chronic kidney disease.

Stage GFR (ml/min/1.73m2) Terms
1 ≥90 Normal or high
2 60-89 Mildly decreased
3a 45-59 Mildly to moderately decreased
3b 30-44 Moderately to severed decreased
4 15-29 Severely decreased
5 <15 Kidney failure

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