Table 2.
Precision analyses for the Elecsys HBsAg II quantitative assaya
| Assay | Sample | Mean (IU/ml) | Repeatability |
Intermediate precision |
||
|---|---|---|---|---|---|---|
| SD (IU/ml) | CV (%) | SD (IU/ml) | CV (%) | |||
| Elecsys 2010 and cobas e 411 analyzers (1:100onboard dilution) | HS 1 | 3.07 | 0.056 | 1.8 | 0.17 | 5.6 |
| HS 2 | 54.3 | 0.747 | 1.4 | 3.04 | 5.6 | |
| HS 3 | 6,610 | 237 | 3.6 | 372 | 5.6 | |
| PreciControl HBsAg II 1 | <0.05 | |||||
| PreciControl HBsAg II 2 | 0.109 | 0.003 | 3.1 | 0.010 | 8.9 | |
| Modular Analytics E170, cobas e 601, or cobas e 602 (1:400 onboard dilution) | HS 4 | 3.06 | 0.069 | 2.3 | 0.15 | 4.9 |
| HS 5 | 55.5 | 1.48 | 2.7 | 3.64 | 6.6 | |
| HS 6 | 37,300 | 1,490 | 4.0 | 3,590 | 9.6 | |
| PreciControl HBsAg II 1 | <0.05 | |||||
| PreciControl HBsAg II 2 | 0.130 | 0.007 | 5.6 | 0.010 | 7.6 | |
a
SD, standard deviation; CV, coefficient of variation; HS, human serum.