Table 1.

Stages of chronic kidney disease based on glomerular filtration rate (eGFR) categories2

Stage	1	2	3a	3b	4	5
eGFR category	Normal and high	Mild reduction	Mild‐moderate reduction	Moderate‐severe reduction	Severe reduction	Kidney failure
eGFR (mL/min/1.73m2)	≥90	60‐89	45‐59	30‐44	15‐29	<15