From: On the rationale of population screening for chronic kidney disease: a public health perspective
 |  |  | Albuminuria stages (mg/g) | ||
---|---|---|---|---|---|
 |  |  | A1: < 30 | A2: 30–299 | A3: >300 |
GFR stages (mL/min/1.73 m2) | G1 | ≥90 | No CKD | CKD G1-A2 | CKD G1-A2 |
G2 | 60-89 | No CKD | CKD G2-A2 | CKD G2-A3 | |
G3a | 45-59 | CKD G3a-A1 | CKD G3a-A2 | CKD G3a-A3 | |
G3b | 30-44 | CKD G3b-A1 | CKD G3b-A2 | CKD G3b-A3 | |
G4 | 15-29 | CKD G4a-A1 | CKD G4a-A2 | CKD G4a-A3 | |
G5 | <15 | CKD G5a-A1 | CKD G5a-A2 | CKD G5a-A3 |