TABLE 5.
Risk of CKD progression and visit frequency, classified by eGFR and UACR.
| CKD categories | Degree of kidney damage | eGFR [mL min−1 (1.73 m2)−1] | Albuminuria categories | ||
|---|---|---|---|---|---|
| A1 (UACR <30 mg g−1) | A2 (UACR 30–300 mg g−1) | A3 (UACR >300 mg g−1) | |||
| Stage 1 (G1) | eGFR normal or high | ≥90 | 1 (if combined CKD) | 1 | 2 |
| Stage 2 (G2) | eGFR mildly decreased | 60–89 | 1 (if combined CKD) | 1 | 2 |
| Stage 3a (G3a) | eGFR mildly to moderately decreased | 45–59 | 1 | 2 | 3 |
| Stage 3b (G3b) | eGFR moderately to severely decreased | 30–44 | 2 | 3 | 3 |
| Stage 4 (G4) | eGFR severely decreased | 15–29 | 3 | 3 | 4 |
| Stage 5 (G5) | Kidney failure | <15 | 4 | 4 | 4 |
Note: The background colors in the table indicate the risk of CKD progression, with green representing low risk, yellow representing moderate risk, orange representing high risk, and red representing very high risk. The numbers in the table suggest the recommended frequency of annual reexamination.
Abbreviations: eGFR, estimated glomerular filtration rate; CKD, chronic kidney disease; UACR, ratio of urinary albumin to creatinine.