Research Article
Diagnostic Performance of SARS-CoV-2 Rapid Antigen Test in relation to RT-PCR Cq Value
Table 5
Sensitivity of rapid antigen test in each Cq values stratified cut-offs.
| Cq value | Target gene | N | Sensitivity (%) |
| <20 | ORF1ab gene | 36 | 88.9 | N gene | 14 | 85.7 |
| 20– < 25 | ORF1ab gene | 28 | 82.1 | N gene | 39 | 87.2 |
| 25– < 30 | ORF1ab gene | 24 | 58.3 | N gene | 31 | 71.0 |
| 30– < 37 | ORF1ab gene | 30 | 20.0 | N gene | 34 | 20.6 |
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