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Table 2 Comparative Results with Ct Values for TaqPath and Cepheid Assays for Discordant Specimens

From: Comparative evaluation of the Thermo fisher TaqPath™ COVID-19 combo kit with the Cepheid Xpert® Xpress SARS-CoV-2 assay for detecting SARS-CoV-2 in nasopharyngeal specimens

Specimen Number TaqPath Result Xpress Result TaqPath Ct
Gene Values
Cepheid Ct Gene Values
N2 ORF lab S N2 E
201 Positive Negative 33.0 33.1 32.8 N.D.a N.D.
284 Negative Positive N.D. N.D. N.D. 41.9 N.D.
288 Negative Positive N.D. N.D. N.D. 40.1 N.D.
  1. aN.D. Not detected