“…First, it did not include patients who were confirmed to be negative for SARS-CoV-2 by RT-PCR. Some antigen tests have been reported to show false positives [ 20 , 21 ], and their likelihood may be influenced by shortened judgment times; however, this issue was not evaluated in this study. Further, we could not compare the specificities of QuickNavi™-COVID19 Ag and the DIA evaluated.…”