Research Article
Complex Monitoring of Biochemical and Radionuclide Parameters in Patients with Metastatic Renal Cell Carcinoma during Immunotherapy
Table 1
Relationship between CKD and FSS gradation: a radionuclide estimate for the total renal function.
| CKD stage | Renal function characteristic | GFR level (mL/min/1.73 m2) | FSS characteristic | FSS index gradation |
| 1 | High and optimal | >90 | Status 1 high level slightly decreased (stable or conditionally stable compensation) | 1a | 2 | Slightly decreased | 60–89 | 1b |
| 3а | Slightly decreased | 45–59 | Status 2 moderately decreased (conditionally stable compensation, transitionally unsustainable level of compensation) | 2a | 3b | Significantly decreased | 30–44 | 2b |
| 4 | Severely decreased | 15–29 | Status 3 moderately to severely decreased (unstable compensation or decompensation) | 3a 3b |
| 5 | End-stage renal failure | <15 | Decompensation | 4 |
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