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. 2021 Jul 27;14(7):e243692. doi: 10.1136/bcr-2021-243692

Table 1.

Known Ct values with positive COVID-19 PCR tests

Date of positive COVID-19 test Ct
14 October 2020 16.2,18.5
29 October 2020 29, 30
11 November 2020 37

Ct, cycle threshold.