Stage	Description	GFR (mL per minute per 1.73 m2 )
1	Kidney damage with normal or increased GFR	≥ 90
2	Kidney damage with a mild decrease in GFR	60 to 89
3	Moderate decrease in GFR	30 to 59
4	Severe decrease in GFR	15 to 29
5	Kidney failure	< 15 (or dialysis)