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Table 3 Evaluation of Ct values of patients tested positive or false negative by antigen test

From: Performance of antigen testing for diagnosis of COVID-19: a direct comparison of a lateral flow device to nucleic acid amplification based tests

Ct values Number Mean Minimum Maximum 95%-confidence intervall
Total 74 26.5 13.0 42.7 [25.1; 28.0]
Ag correct positive 46 25.1 15.7 37.0 [23.6; 26.5]
Ag false negative 28 29.0 13.0 42.7 [26.1; 31.8]