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Table 1 Classification of CKD stages 1–5

From: Exploring metabolic dysfunction in chronic kidney disease

Stage Description GFR, ml/min/1.73 m2
- At increased risk ≥ 60
1 Kidney damage with normal or increased GFR ≥ 90
2 Kidney damage with mild decreased GFR 60-89
3 Moderately decreased GFR 30-59
4 Severely decreased GFR 15-29
5 Kidney failure < 15 (or dialysis)
  1. Adapted from [1].