Table 3. Deployable assay performance with 2010 clinical samples.
| Assay results | ||
| Assay target | Influenza A matrix gene | Influenza A/H1N1 HA gene |
| Influenza A/H1N1 2009 | 28/31 | 29/31 |
| Influenza A/H3 | 5/6 | 0/6 |
| Influenza B | 0/3 | 0/3 |
| Negative controls | 0/8 | 0/8 |
| Sensitivity | 89.2% | 93.5% |
| Specificity | 100% | 100% |
| Positive predictive value | 1.00 | 1.00 |
| Negative predictive value | 0.73 | 0.895 |
| Total true positives | 37 | 31 |
| Total true negatives | 11 | 17 |
Samples from 40 consecutive influenza-positive patients (31 influenza A/H1N1/09, 6 influenza A/H3 and 3 influenza B) plus 8 negative controls (ultrapure water).