Table 3.
Performance of RIDTs with automated readersa
| Assay | Comparator | Flu A Sensitivityb (95% CI) (%) | Flu A Specificityb (95% CI) (%) | Flu B Sensitivityb (95% CI) (%) | Flu B Specificityb (95% CI) (%) | Walk-Away |
|---|---|---|---|---|---|---|
| Quidel Sofia Influenza A + B | Culture | 97 (91–99) | 95 (93–96) | 90 (83–95) | 97 (95–98) | Yes |
| BD Veritor | RT-PCR | 81.3c (70.0–88.9) | 97.4c (94.4–98.8) | 85.6c (76.8–91.4) | 99.0c (96.5–99.7) | No |
| 3M Direct Detection Flu A+ B | Culture | 80.3 (68.7–89.1) | 96.6 (94.8–97.9) | 58.3 (27.7–84.8) | 98.0 (96.6–99.0) | Yes |
a
Data derived from product inserts accessed from company Web sites, October 2013.
b
Sensitivity and specificity shown for nasopharyngeal swabs.
c
Positive percent agreement and negative percent agreement shown on product insert.