Stages of CKD Stage 1: Normal or high GFR (eGFR >90), with signs of kidney damage like protein in the urine. Stage 2: Mildly decreased GFR (60–89), with other signs of kidney damage. Stage 3a: Mild to moderate decrease in GFR (45–59). Stage 3b: Moderate to severe decrease in GFR (30–44). Stage 4: Severely decreased GFR (15–29). Stage 5: Kidney failure (eGFR

Stages of kidney disease (CKD)