TABLE 1.
AxSYM Combo precision
| Proficiency panel member | No. of replicates | Mean S/CO | Precision
|
|||
|---|---|---|---|---|---|---|
| Within runs
|
Between runs
|
|||||
| SD | CV (%) | SD | CV (%) | |||
| Index calibrator | 189 | 17.10a | 0.824 | 4.8 | 0.972 | 5.7 |
| AxSYM Combo negative assay control | 414 | 0.38 | 0.017 | 4.5 | 0.021 | 5.5 |
| AxSYM Combo HIV-1-positive assay control | 414 | 3.84 | 0.205 | 5.3 | 0.253 | 6.6 |
| AxSYM Combo HIV-2 positive assay control | 414 | 3.55 | 0.166 | 4.7 | 0.219 | 6.2 |
| AxSYM Combo viral lysate positive assay control | 414 | 3.23 | 0.158 | 4.9 | 0.191 | 5.9 |
| Anti HIV-1 high titer (nondiluted) | 189 | 25.96 | 1.29 | 5.0 | 2.41 | 9.3 |
| Anti HIV-2 high titer (nondiluted) | 189 | 54.15 | 2.00 | 3.7 | 2.47 | 4.6 |
| Anti HIV-1 medium titer (diluted) | 189 | 11.85 | 0.541 | 4.6 | 0.742 | 6.3 |
| Anti HIV-2 medium titer (diluted) | 189 | 11.79 | 0.519 | 4.4 | 0.912 | 7.7 |
| Anti HIV-1 group O | 189 | 3.92 | 0.283 | 7.2 | 0.333 | 8.5 |
| HIV p24 antigenb | 162 | 1.59 | 0.068 | 4.2 | 0.102 | 6.4 |
a
Expressed as a rate value.
b
Data from one site were omitted due to errors in the preparation of the specimen.