Table 2 Levels of VCA-IgA antibodies detected in the VCA-IgA antibody reference serum by the 6 commercial kits
Manufacturer | Cut-off value | Reference serum | Ratio† | Within-run CV | Total CV | |||
|---|---|---|---|---|---|---|---|---|
(arbitrary units)* | (arbitrary units) | High | Low | High | Low | |||
Euroimmun | ELISA | 1.1 | 13.0 | 11.8 | 3.98% | 6.11% | 6.24% | 6.52% |
Beier** | ELISA | 1.1 | 3.2 | 2.9 | 5.03% | 19.66% | 13.77% | 43.11% |
Tarcine | ELISA | 0.15 | 1.4 | 9.3 | 4.95% | 7.58% | 8.27% | 7.22% |
Antu** | ELISA | 0.15 | 3.5 | 23.3 | 4.62% | 6.45% | 13.74% | 16.85% |
New Industries | CLIA | 4 | 12.0 | 3.0 | 2.47% | 4.34% | 5.95% | 9.86% |
YHLO | CLIA | 1.1 | 5.6 | 5.1 | 4.76% | 5.22% | 3.98% | 4.87% |