Table 1.
Stages of chronic kidney diseasea on the basis of glomerular filtration rate
| Stage | GFR (mL/min/1.73 m2 body surface area) | Description |
|---|---|---|
| 1b | ≥90 | Normal GFR |
| 2b | 60–89 | Mild ↓ GFR |
| 3 | 30–59 | Moderate ↓ GFR |
| 4 | 15–29 | Severe ↓ GFR |
| 5 | <15 or dialysis | Kidney failure |
GFR, glomerular filtration rate.
a
Chronic kidney disease is defined as disease that persists ≥3 months
b
Stage 1 and 2 require a marker of kidney disease: proteinuria hematuria, or an anatomic abnormality
Adapted and reproduced by permission of the publisher and author from: National Kidney Foundation (NKF) Kidney Disease Outcome Quality Initiative (K/DOQI) Advisory Board. K/DOQI clinical practice guidelines for chronic kidney disease: evaluation, classification, and stratification. Am J Kidney Dis 2002 Feb;39(2 Suppl 1):S1–246.1