Table 2.
Skeleton for a suggested classification of kidney health classification using Cockcroft-Gault calculation of creatinine clearance and dipstick evaluation of proteinuria. The same framework could be used with any other validated measures of clearance and albuminuria or proteinuria
|
Proteinuria |
|||||||
|---|---|---|---|---|---|---|---|
| Group | Kidney function (ml/min/1.73 m2) | a (negative) | b (trace) | c (1+) | d (2+) | e*(3+) | f*(nephrotic syndrome) |
| 1 |
≥80 |
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| 2 |
60-79 |
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| 3 |
30-59 |
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| 4 |
15-29 |
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| 5* |
<15, not requiring renal replacement therapy |
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| 6* |
<15, renal replacement therapy offered but declined |
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| 7* |
<15, might benefit from renal replacement therapy but pursuing conservative treatment on medical advice |
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| 8* |
<15, requiring, but not receiving, renal replacement therapy because of resource constraints or lack of availability |
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| HD |
Haemodialysis |
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| PD |
Peritoneal dialysis |
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| T | Transplantation† | ||||||
*
When data are not available, categories can be collapsed. For example, if information about clinical nephrotic syndrome is not available, proteinuria groups e and f would be reported together as group e-f.
†
Patients with functioning renal transplants can be further classified into the clearance and protein categories described above (eg, T3c would represent transplanted patients with clearance of 30-59 ml/min/1.73 m2 and 1+ proteinuria).