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Test validity of laboratory-based BinaxNow antigen testing compared to viral culture
| Sub-Cohort | Specimens Tested | Sensitivity (95% CI) | Specificity (95% CI) |
|---|---|---|---|
| Total | 61 | 72% (16/22), (50–88%) | 85% (33/39), (69–93%) |
| Delta | 33 | 69% (9/13), (38–89%) | 85% (17/20), (60–95%) |
| Omicron | 28 | 78% (7/9), (36–96%) | 84% (16/19), (59–95%) |
| Days 0–5 | 22 | 81% (13/16), (53–94%) | 67% (4/6), (18–95%) |
| Days 6–10 | 39 | 50% (3/3), (11–89%) | 88% (29/33), (71–96%) |
