Table 8.
Reproducibility and intraclass correlation of in-house assaysa
| In-House developed SARS-CoV-2 serological assay reproducibility and intraclass correlation coefficient | |||||
|---|---|---|---|---|---|
| Assay ID | Antibody | Within day (%) | Across day (%) | Overall (%) | Intraclass correlation coefficient (ICC) |
| 11 | Pan Ig | 9.9 | 12.1 | 15.6 | 0.925 |
| 12 | Pan Ig | 8.7 | 10.8 | 13.9 | 0.896 |
| 13 | Pan Ig | 8.3 | 12.6 | 15.1 | 0.936 |
| 14 | Pan Ig | 12.3 | 15.6 | 19.9 | 0.954 |
| 15 | Pan Ig | 8.6 | 14.6 | 16.9 | 0.789 |
| 16 | Pan Ig | 6.6 | 22.5 | 23.4 | 0.964 |
| 17 | Pan Ig | 3.1 | 9.2 | 9.7 | 0.976 |
| 18 | IgG | 12.4 | 30.2 | 32.7 | 0.946 |
| 19 | IgG | 16.3 | 16.2 | 23.0 | 0.980 |
| 20 | IgG | 6.4 | 25.7 | 26.5 | 0.983 |
| 21 | IgG | 8.7 | 23.1 | 24.6 | 0.976 |
| 22 | IgG | 15.4 | 12.8 | 20.0 | 0.986 |
| 23 | IgG | 10.5 | 10.8 | 15.0 | 0.989 |
| 24 | IgG | 8.0 | 16.4 | 18.2 | 0.980 |
a
Variability above 20% is highlighted in bold. Data analysis was performed prior to harmonization.