Table 5.

Sensitivity of rapid antigen test in each Cq values stratified cut-offs.

Cq value	Target gene	N	Sensitivity (%)
<20	ORF1ab gene	36	88.9
	N gene	14	85.7
20– < 25	ORF1ab gene	28	82.1
	N gene	39	87.2
25– < 30	ORF1ab gene	24	58.3
	N gene	31	71.0
30– < 37	ORF1ab gene	30	20.0
	N gene	34	20.6