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- Title
Rapid and Safe Detection of SARS-CoV-2 and Influenza Virus RNA Using Onsite Quantitative PCR Diagnostic Testing From Clinical Specimens Collected in Molecular Transport Medium.
- Authors
Daum, Luke T; Fischer, Gerald W
- Abstract
Background: The ability to rapidly detect severe accurate respiratory syndrome coronavirus virus-2 (SARS-CoV-2) and influenza virus infection is vital for patient care due to overlap in clinical symptoms. Roche's cobas® Liat® SARS-CoV-2 & Influenza A/B Nucleic Acid Test used on the cobas Liat was granted approval under the Food and Drug's Emergency Use Authorization for nasopharyngeal (NP) and nasal swabs collected in viral/universal transport medium (VTM/UTM). However, there is a critical need for media that inactivates the virus, especially when specimens are collected in decentralized settings. This study aimed to investigate the use of PrimeStore Molecular Transport Medium® (PS-MTM®), designed to inactivate/kill and stabilize RNA/DNA for ambient transport and preprocessing of collected samples. Methods: A limit of detection (LOD) using serially diluted SARS-CoV-2 RNA in PS-MTM and routine UTM was established using standard quantitative PCR (qPCR). Additionally, a clinical panel of NP and oral swabs collected in PS-MTM during the 2020 coronavirus disease 2019 pandemic were evaluated on the cobas Liat and compared to "gold standard" qPCR on an ABI-7500 instrument. Results: SARS-CoV-2 RNA LOD using standard qPCR was equivalent on the cobas Liat instrument. cobas Liat detection from oral/NP swabs in PS-MTM media exhibited equivalent positive percent agreement (100%) and negative percent agreement (96.4%). Conclusion: PS-MTM and the Roche cobas Liat are compatible and complimentary devices for respiratory specimen collection and rapid disease detection, respectively. PS-MTM is equivalent to standard VTM/UTM with the added benefit of safe, noninfectious sample processing for near-patient testing.
- Subjects
COVID-19; MIDDLE East respiratory syndrome; RNA viruses; SARS-CoV-2; COVID-19 pandemic; INFLUENZA viruses; INFLUENZA A virus
- Publication
Journal of Applied Laboratory Medicine, 2021, Vol 6, Issue 6, p1409
- ISSN
2475-7241
- Publication type
Article
- DOI
10.1093/jalm/jfab073