Fig. 2. Comparison of Ct values of real-time PCR targeting SARS-CoV-2 genes and RNase P among the six collection methods (N=10). (A) SARS-CoV-2 E gene, (B) SARS-CoV-2 RdRP gene, (C) SARS-CoV-2 N gene, and (D) Human RNase P gene. The positivity rate of each method is expressed as a percentage. *indicates P<0.05.
Abbreviations: Ct, cycle threshold; SARS-CoV-2, severe acute respiratory syndrome-coronavirus 2; NPS, nasopharyngeal swab; Nasal (5), nasal swab with five rotations in one nostril; Nasal (10), nasal swab with 10 rotations in one nostril.

Ann Lab Med 2023;43:434~442 https://doi.org/10.3343/alm.2023.43.5.434