Table 1 Precision of serum bactericidal assay with four quality control sera
From: A high throughput serum bactericidal assay for antibodies to Haemophilus influenzae type b
QCVH | QCH | QCM | QCL | ||
|---|---|---|---|---|---|
Serum bactericidal index | |||||
Intra-assay variability (N = 5) | Mean | 2876 | 1348 | 1865 | 824 |
Standard deviation | 252 | 191 | 333 | 314 | |
Coefficient of variation (%) | 9 | 14 | 18 | 38 | |
Range | 2507 ~ 3072 | 1118 ~ 1532 | 1554 ~ 2336 | 510 ~ 1260 | |
Inter-assay variability (N = 11) | Mean | 2841 | 1099 | 1017 | 637 |
Standard deviation | 1016 | 344 | 331 | 216 | |
Coefficient of variation (%) | 36 | 31 | 33 | 34 | |
Range | 1582 ~ 4376 | 538 ~ 1623 | 492 ~ 1444 | 514 ~ 1095 | |