GFR stages | GFR (mL/min/1.73 m2) | Terms |
G1 | ≥90 | Normal or high |
G2 | 60 to 89 | Mildly decreased |
G3a | 45 to 59 | Mildly to moderately decreased |
G3b | 30 to 44 | Moderately to severely decreased |
G4 | 15 to 29 | Severely decreased |
G5 | <15 | Kidney failure (add D if treated by dialysis) |
Albuminuria stages | AER (mg/day) | Terms |
A1 | <30 | Normal to mildly increased (may be subdivided for risk prediction) |
A2 | 30 to 300 | Moderately increased |
A3 | >300 | Severely increased (may be subdivided into nephrotic and nonnephrotic for differential diagnosis, management, and risk prediction) |
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