Abstract
Abstract
Purpose
With over 50 SARS-CoV-2 gene amplification assays that have been EUA cleared with minimal experimental validation performed, it is likely that not all of these assays are comparable in their ability to detect SARS-CoV-2 in clinical specimens. Thermo Fisher Scientific is a relatively new company in the molecular diagnostics field and the purpose of this study was to compare the performance of the Thermo Fisher TaqPath™ Combo Kit with an established test, the Cepheid Xpert® Xpress SARS-CoV-2 assay, for its ability to detect SARS-CoV-2 in nasopharyngeal specimens.
Methods
A total of 300 randomly selected nasopharyngeal specimens were evaluated and tested by the TaqPath and GeneXpert assays. Discordant test specimens were arbitrated by performing an alternative PCR assay and Sanger sequencing.
Results
The TaqPath assay had a 96.7 and 99.6% positive and negative agreement respectively when compared to the Xpert Xpress test. However, after test arbitration, the three discordant specimens were arbitrated in favor of the TaqPath assay producing a positive and negative percent agreement of 100% for the TaqPath Combo Kit while the Xpress SARS-CoV-2 assay had a positive and negative percent agreement of 98.3 and 99.2% respectively.
Conclusions
The TaqPath Combo Kit is a high complexity assay that compares favorably with the Xpert Xpress test and can be reliably used for the detection of SARS-CoV-2 in nasopharyngeal specimens.
Publisher
Springer Science and Business Media LLC
Reference12 articles.
1. CDC (2020) Situation summary. https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/summary.html.
2. Lu R, Zhao X, Li J, Niu P, Yang B, Wu H, et al. Genomic characterization and epidemiology of 2019 novel coronavirus: implications for virus origins and receptor binding. Lancet. 2020;395(10224):565–74. https://doi.org/10.1016/50140-6736(20)30251-8.
3. WHO (2020) WHO Director-General’s remarks at the media briefing on 2019-nCoV on 11 February 2020. http://www.who.int/publications-detail/laboratory-testing-for-2109-novel-coronavirus-in-suspected-human-cases-20200117.
4. Coronaviridae Study Group of the International Committee on Taxonomy of Viruses. The species severe acute respiratory syndrome-related coronavirus: classifying 2019-nCoV and naming it SAR-CoV-2. Nat Microbial. 2020;5(4):536–44. https://doi.org/10.1038/541564-020-0695-2.
5. WHO. 2020. WHO Director-General’s remarks at the media briefing on 2019-nCoV on 11 March 2020. https://www.who.int/dg/speeches/deatil/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19%2D%2D-11-march-2020.
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