Table 6. Selected sample characteristics of false-negative cases.
| Case number1 | Months before diagnosis | Histopathology | Quality of urine | Quality of RNA |
| 2 | Low-grade | Creatinine low | ||
| 3 | Low-grade | β-actin low | ||
| 4a | Papilloma | Creatinine low | ||
| 5 | 26 | |||
| 7 | ||||
| 8 | 0/142 | |||
| 10 | 18 | β-actin low | ||
| 11 | Low-grade | Creatinine low | β-actin low | |
| 13 | ||||
| 14 | Low-grade | |||
| 15 | ||||
| 16 | Papilloma | |||
| 17 | Papilloma | |||
| 18 | Low-grade | |||
| 20 | Creatinine low |
1
For cases 1 and 12 no samples were available for survivin determination.
2
Negative at last (0 months), positive at previous screen (14 months).