Table 6.
Sample Testing in Patients With Potential Interfering Factors (n = 423)
| Elecsys HCV II | Elecsys HCV | Intec | Livzon | |
|---|---|---|---|---|
| IR% (COI> = 5) | 19 (4.49%) | 19 (4.49%) | 17 (4.02%) | 14 (3.31%) |
| IR% (COI<5) | 2 (0.47%) | 3 (0.71%) | 1 (0.24%) | 3 (0.71%) |
| RR% (COI>1) | 21 (4.96%) | 22 (5.20%) | 18 (4.25%) | 17 (4.02%) |
| Confirmed positive | 16 (3.78%) | 16 (3.78%) | 16 (3.78%) | 15 (3.55%) |
| Confirmed Indeterminate | 3 (0.71%) | 4 (0.95%) | 1 (0.24%) | 2 (0.47%) |
| Number of false positives | 2 (0.47%) | 2 (0.47%) | 1 (0.24%) | 0 |
| Number of false negative | 0 | 0 | 1 (0.24%) | 1 (0.24%) |
| Specificity | 99.52% (98.86%, 100.18%) | 99.52% (98.86%, 100.18%) | 99.76% (99.29%, 100.22%) | 100% |
| Sensitivity | 100% | 100% | 99.76% (99.29%, 100.22%) | 99.76% (99.29%, 100.22%) |
| False results caused by interfering factors (RR/confirmed positive) | ||||
| TP(+) (n = 25) | 1/0 | 0/0 | 0/0 | 0/0 |
| RF(+) (n = 20) | 1/1 | 1/1 | 0/1 | 0/1 |
| Dialysis (n = 100) | 7/6 | 8/6 | 6/6 | 6/6 |
| HIV (n = 50) | 3/3 | 3/3 | 4/3 | 3/3 |