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Table 3 Comparison between Ct value and disease condition of true positive and false negative cases

From: A comparison of SARS-CoV-2 rapid antigen testing with realtime RT-PCR among symptomatic and asymptomatic individuals

 

Mild

Ct Range

Moderate

Ct Range

Hospitalised

Ct Range

Asymptomatic

Ct Range

True positive (n = 112)

8

17.3–29.7

83

15.3–31.7

19

17–30.7

2

27.4–30.6

False negative (n = 37)

8

21–27.7

3

26.5–32

4

25.3–30.6

22

27–32.9