Classifications of Chronic Kidney Disease
| Stage | Associated GFR (mL/minute/1.73m2) |
|---|---|
| 1 | >90 with persistent kidney damage* |
| 2 | 60–89 with persistent kidney damage* |
| 3 | 30–59 |
| 4 | 15–29 |
| 5 | <15 |
* Kidney damage includes both functional damage (proteinuria, glomerulonephritis) and structural damage (polycystic kidneys).
GFR, glomerular filtration rate.