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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