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. 2022 May 5;12:7355. doi: 10.1038/s41598-022-11284-8

Table 3.

Oral swab Rapid Antigen Test results by Cycle threshold (Ct) value cut-offs.

Ct value
(ORF gene)
Total
N (% within total)
Rapid antigen test positives
N (% within Ct value)
 ≤ 25 80 (66.1) 57 (71.3)
 > 25 41 (33.9) 05 (12.2)
 ≤ 30 88 (72.7) 59 (67.04)
 > 30 33 (27.3) 03 (9.1)
Total 121 (100) 62 (51.2)