Review Article
Estimating Glomerular Filtration Rate in Older People
Table 1
The kidney disease outcomes quality initiative (KDOQI) stages of kidney disease.
| Stage | GFR* | Description |
| 1 | 90+ | Normal kidney function | 2 | 60–89 | Mildly reduced kidney function | 3A 3B | 45–59 30–44 | Moderately reduced kidney function | 4 | 15–29 | Severely reduced kidney function | 5 | <15 or on dialysis | Very severe or endstage kidney failure |
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All GFR values are normalized to an average body surface area (BSA) of 1.73 m2.
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