Ct values and positive rates of SARS-CoV-2 test results according to the presence of symptoms by specimen type
| Specimen | Symptom positive | Symptom negative | |||||
|---|---|---|---|---|---|---|---|
| Ct value | Positive rate | Ct value | Positive rate | ||||
| Nasopharyngeal swab | 32.91 | 33.57 | 40.0% (2/5) | 28.95 | 29.30 | 87.5% (35/40) | |
| Anterior nasal swab | 32.90 | 32.93 | 20.0% (1/5) | 29.90 | 29.91 | 37.5% (15/40) | |
| Saliva | 33.40 | 33.60 | 20.0% (1/5) | 31.08 | 31.26 | 60.0% (24/40) | |
Values are presented as mean or % (number).
Abbreviations: Ct, cycle threshold; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.