Table 2.
Clinical Comparison of Matched Nasopharyngeal, Oropharyngeal, and Nasal Swab Specimens Collected From Patients Presenting to the Emergency Department Using Abbott ID NOW (n = 182)
| Molecular Assay | DiaSorin Simplexaa | |||
|---|---|---|---|---|
| Positive | Negative | PPA (± 95% CI) | NPA (± 95% CI) | |
| Abbott ID NOW (NPS UVT) | ||||
| Positive | 12 | 0 | 92% | 100% |
| Negative | 1b | 169 | (0.67-0.99) | (0.98-1.00) |
| Abbott ID NOW (Dry OPS) | ||||
| Positive | 12 | 0 | 92% | 100% |
| Negative | 1b | 169 | (0.67-0.99) | (0.98-1.00) |
| Abbott ID NOW (Dry NS) | ||||
| Positive | 12 | 0 | 92% | 100% |
| Negative | 1b | 169 | (0.67-0.99) | (0.98-1.00) |
CI, confidence interval; NPA, negative percent agreement; NPS, nasopharyngeal swabs; NS, nasal swabs; OPS, oropharyngeal swabs; PPA, positive percent agreement; UVT, universal viral transport medium.
aDiaSorin Simplexa was considered the comparator and was only performed on NPS collected in UVT.
bCycle threshold not available