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. 2021 Apr 1;138:104817. doi: 10.1016/j.jcv.2021.104817

Table 5.

Detection of different virus concentrations by the eazyplex® SARS-CoV-2 using the INSTAND reference standard.

Copies/mL eazyplex®
NeuMoDx™
Copies/reaction Positive replicates, median threshold time, min (IQR)
Positive replicates,
N or/and ORF8-positive
Positive replicates, median Ct
N gene ORF8 gene N gene Nsp2 gene
106 240 6/6, 13 (12.75−13.75) 6/6, 15.5 (13.75−20.25) 6/6 4/4, 22.2 4/4, 23
105 24 4/6, 19.5 (16.5−20.25) 4/6, 24.5 (23.5−24.75) 6/6 4/4, 25.7 4/4, 25.9
104 3 1/6, 24.5 0/6 1/6 4/4, 29.1 4/4, 29.8

IQR, interquartile range.