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Fast SARS-CoV-2 detection by RT-qPCR in preheated nasopharyngeal swab samples
Julia Alcoba-Florez; Rafaela Gonzalez-Montelongo; Antonio Inigo-Campos; Diego Garcia-Martinez de Artola; Helena Gil-Campesino; The Microbiology Technical Support Team; Laura Ciuffreda; Agustin Valenzuela-Fernandez; Carlos Flores.
Afiliación
  • Julia Alcoba-Florez; Servicio de Microbiologia, Hospital Universitario N. S. de Candelaria, Santa Cruz de Tenerife, Spain
  • Rafaela Gonzalez-Montelongo; Genomics Division, Instituto Tecnologico y de Energias Renovables, Santa Cruz de Tenerife, Spain
  • Antonio Inigo-Campos; Genomics Division, Instituto Tecnologico y de Energias Renovables, Santa Cruz de Tenerife, Spain
  • Diego Garcia-Martinez de Artola; Servicio de Microbiologia, Hospital Universitario N. S. de Candelaria, Santa Cruz de Tenerife, Spain
  • Helena Gil-Campesino; Servicio de Microbiologia, Hospital Universitario N. S. de Candelaria, Santa Cruz de Tenerife, Spain
  • The Microbiology Technical Support Team;
  • Laura Ciuffreda; Research Unit, Hospital Universitario N. S. de Candelaria, Santa Cruz de Tenerife, Spain
  • Agustin Valenzuela-Fernandez; Laboratorio de Inmunologia Celular y Viral, Unidad de Farmacologia, Facultad de Medicina, Universidad de La Laguna, San Cristobal de La Laguna, Spain
  • Carlos Flores; Research Unit, Hospital Universitario N. S. de Candelaria, Santa Cruz de Tenerife, Spain
Preprint en En | PREPRINT-MEDRXIV | ID: ppmedrxiv-20058495
ABSTRACT
The current reference for COVID-19 diagnosis is based on the detection of SARS-CoV-2 on RNA extracts using one-step retrotranscription and quantitative PCR (RT-qPCR). Based on the urgent need for high-throughput COVID-19 screening, we tested the performance of three alternative, simple and affordable protocols to rapidly detect SARS-CoV-2, overcoming the long and tedious RNA extraction step. Although with an average increase of 6.1 ({+/-} 1.6) cycles compared to standard tests with RNA extracts, we show that RT-qPCR yielded consistent results in nasopharyngeal swab samples that were subject to a direct 70{degrees}C incubation for 10 min. Our findings provide viable options to overcome any supply chain issue and help to increase the throughput of diagnostic tests by using any qPCR device, thereby complementing standard COVID-19 testing.
Licencia
cc_by_nc_nd
Texto completo: 1 Colección: 09-preprints Base de datos: PREPRINT-MEDRXIV Tipo de estudio: Diagnostic_studies Idioma: En Año: 2020 Tipo del documento: Preprint
Texto completo: 1 Colección: 09-preprints Base de datos: PREPRINT-MEDRXIV Tipo de estudio: Diagnostic_studies Idioma: En Año: 2020 Tipo del documento: Preprint