Table 9.2-2. GFR categories in CKD according to the 2012 KDIGO guideline

GFR category

GFR (mL/min/1.73 m2)

Terms

G1

≥90

Normal or high GFR

G2

60-89

Mildly decreased GFR

G3a

45-59

Mildly to moderately decreased GFR

G3b

30-44

Moderately to severely decreased GFR

G4

15-29

Severely decreased GFR

G5

<15

Kidney failure

Based on: Kidney Disease: Improving Global Outcomes (KDIGO) Acute Kidney Injury Work Group. KDIGO Clinical Practice Guideline for Acute Kidney Injury. Kidney Inter., Suppl. 2012; 2: 1-138.

CKD, chronic kidney disease; GFR, glomerular filtration rate; KDIGO, Kidney Disease: Improving Global Outcomes.