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
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...
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doaj-ec2756d2d6b1412ea307de2b6dd525c72021-07-04T11:54:09ZengBMCBMC Infectious Diseases1471-23342021-06-012111610.1186/s12879-021-06347-6Comparative 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 specimensPaul A. Granato0Simon R. Kimball1Brenda R. Alkins2Deirdre C. Cross3Melissa M. Unz4Microbiology Department, Laboratory Alliance of Central New YorkMicrobiology Department, Laboratory Alliance of Central New YorkMicrobiology Department, Laboratory Alliance of Central New YorkGenetic Sciences Division, Thermo Fisher ScientificMicrobiology Department, Laboratory Alliance of Central New YorkAbstract 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.https://doi.org/10.1186/s12879-021-06347-6TaqPath combo kitXpert Xpress SARS-CoV-2 assayPCRSARS-CoV-2COVID-19Gene amplification tests |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Paul A. Granato Simon R. Kimball Brenda R. Alkins Deirdre C. Cross Melissa M. Unz |
spellingShingle |
Paul A. Granato Simon R. Kimball Brenda R. Alkins Deirdre C. Cross Melissa M. Unz 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 BMC Infectious Diseases TaqPath combo kit Xpert Xpress SARS-CoV-2 assay PCR SARS-CoV-2 COVID-19 Gene amplification tests |
author_facet |
Paul A. Granato Simon R. Kimball Brenda R. Alkins Deirdre C. Cross Melissa M. Unz |
author_sort |
Paul A. Granato |
title |
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 |
title_short |
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 |
title_full |
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 |
title_fullStr |
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 |
title_full_unstemmed |
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 |
title_sort |
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 |
publisher |
BMC |
series |
BMC Infectious Diseases |
issn |
1471-2334 |
publishDate |
2021-06-01 |
description |
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. |
topic |
TaqPath combo kit Xpert Xpress SARS-CoV-2 assay PCR SARS-CoV-2 COVID-19 Gene amplification tests |
url |
https://doi.org/10.1186/s12879-021-06347-6 |
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