Fig. 1. Comparison of Ct values for the target SARS-CoV-2 genes (A) E, (B) RdRp, and (C) N in Ag test-positive and Ag test-negative samples. Values are expressed as median (interquartile range).
Abbreviations: Ct, cycle threshold; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; Ag, antigen; E, envelope gene; RdRp, RNA-dependent RNA polymerase gene; N, nucleocapsid gene.

Ann Lab Med 2022;42:100~104 https://doi.org/10.3343/alm.2022.42.1.100