| Autor: |
Hiu Tat Chan, Marco H.T. Keung, Ivy Nguyen, Ellen L.O. Ip, Su M. Chew, Danielle Siler, Marion Saville, David Hawkes |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Journal of Clinical Virology Plus, Vol 2, Iss 3, Pp 100079- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2667-0380 |
| DOI: |
10.1016/j.jcvp.2022.100079 |
| Popis: |
Objectives: To examine the comparative stochasticity profile of six commercial SARS-CoV-2 nucleic acid amplification tests (NAATs) and how this may affect retesting paradigms. Methods: Commercial quality control (QC) material was serially diluted in viral transport media to create a panel covering 10–10,000 copies/ml. The panel was tested across six commercial NAATs. A subset of high cycle threshold results was retested on a rapid PCR assay to simulate retesting protocols commonly used to discriminate false positives. Results: Performance beyond the LOD differed among assays, with three types of stochasticity profiles observed. The ability of the rapid PCR assay to reproduce a true weak positive specimen was restricted to its own stochastic performance at the corresponding viral concentration. Conclusion: Stochastic performance of various NAATs overlap across low viral concentrations and affect retesting outcomes. Relying on retesting alone to discriminate false positives risk missing true positives even when a more sensitive assay is deployed for confirmatory testing. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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