TABLE 3.
International Renal Interest Society chronic kidney disease staging after radioiodine treatment with serum creatinine and symmetric dimethylarginine concentrations
| IRIS CKD stage | Based on serum creatinine | |||||
|---|---|---|---|---|---|---|
| 0 | 1 | 2 | Missing | Total | ||
| Based on SDMA | 0 | 38 | … | … | … | 38 |
| 1 | … | 8 | 15 | 0 | 23 | |
| 2 | … | 2 | 9 | 0 | 11 | |
| 3 | … | 0 | 1 | 0 | 1 | |
| 4 | … | 1 | 0 | 0 | 1 | |
| Missing | 1 | 0 | 1 | 4 | 6 | |
| Total | 39 | 11 | 26 | 4 | 80 | |
Note: International Renal Interest Society CKD staging (0–4) according to the creatinine (columns) and SDMA (rows) concentrations. The allocation of stage 0 is given to cats with adequate urine concentration (urine specific gravity ≥1.035) and deemed to have adequate renal function. The allocation of possible stage 1 is given to cats with urine specific gravity <1.035, but with creatinine <140 μmol/L and/or SDMA <18 μg/dL. Bolded numbers indicate agreement between serum creatinine and SDMA.
Abbreviations: CKD, chronic kidney disease; SDMA, symmetric dimethylarginine.