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. 2020 Aug 27;131:104614. doi: 10.1016/j.jcv.2020.104614

Table 6.

Performance of the Novodiag® Covid-19 assay and the Xpress® SARS-CoV-2 assay in the preliminary evaluation.

Agreement compared to combination reference
Novodiag® Covid-19, n=106
Xpress® SARS-CoV-2, n=90
No/reference Agreement % (95% CI) No/reference Agreement % (95% CI)
Posit Total 57/61 93.4 (84.3-97.4) 60/60 100 (94.0-100)
Ct < 20 15/15 100 (79.6-100) 15/15 100 (79.6-100)
Ct 20-30 38/39 97.4 (86.8-99.5) 38/38 100 (90.8-100)
Ct > 30 4/7 57.1 (25.0-84.2) 7/7 100 (64.6-100)
Negat No Ct 45/45 100 (92.1-100) 30/30 100 (88.6-100)