Table 1. CKD staging.

CKD: chronic kidney disease

Stages of CKD	GFR 1.73 mL/minute/1.73 m2
Stage 1 (normal)	>= 90
Stage 2 (mild deterioration)	60–89
Stage 3A (mild-to-moderate deterioration)	45–59
Stage 3B (moderate-to-severe deterioration)	30–44
Stage 4 (severe deterioration)	15–29
Stage 5 (kidney failure)	<= 15
Stage 5D (kidney failure)	On dialysis