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Distribution of weak positives for different Ct value cut-offs
| Ct cut-off value | RdRP gene | E gene | N gene | |
|---|---|---|---|---|
| 36 | Ct≤36 | 1316 (80.39%) | 899 (85.54%) | 326 (75.29%) |
| Ct>36 | 321 (19.61%) | 152 (14.46%) | 107 (24.71%) | |
| 38 | Ct≤38 | 1460 (89.19%) | 967 (92.00%) | 400 (92.38%) |
| Ct>38 | 177 (10.81%) | 84 (8.00%) | 33 (7.62%) | |
| 40 | Ct≤40 | 1548 (94.56%) | 1003 (95.43%) | 422 (97.46%) |
| Ct>40 | 89 (5.44%) | 48 (4.57%) | 11 (2.54%) | |
Weak positives: Ct values > Ctcut-off.
