Table 2.
Statistical evaluation of within- and between-run imprecision.
| Between-run Imprecision |
In-Run Imprecision |
|||||
|---|---|---|---|---|---|---|
| Negative Control |
Positive Control |
Negative Control |
Positive Control |
Cut-off Control |
||
| Epitope | Mean (OD) | 0.11 | 0.90 | 0.16 | 0.29 | 0.30 |
| SD | 0.01 | 0.16 | 0.01 | 0.03 | 0.03 | |
| CV (%) | 9.18 | 18.34 | 8.39 | 10.94 | 11.34 | |
| Euroimmun | Mean (Ratio) | 0.38 | 2.27 | 0.45 | 2.21 | 1.47 |
| SD | 0.05 | 0.37 | 0.02 | 0.07 | 0.08 | |
| CV (%) | 13.27 | 16.27 | 5.20 | 3.34 | 5.63 | |
| Roche | Mean (COI) | 0.09 | 3.61 | 0.09 | 3.43 | 1.41 |
| SD | 0.00 | 0.24 | 0.02 | 0.10 | 0.02 | |
| CV (%) | 4.23 | 6.76 | 22.02 | 2.79 | 1.61 | |
Abbreviations: SD = standard deviation; CV = coefficient of variation; OD = optical density; COI = cutoff index.