id author title date pages extension mime words sentences flesch summary cache txt cord-352073-rdhjj72g Taniwaki, S.A Resource optimization in COVID-19 diagnosis 2020-06-26 .txt text/plain 1910 98 57 The emergence and rapid dissemination worldwide of a novel Coronavirus (SARS-CoV-2) results in decrease of swabs availability for clinical samples collection, as well as, reagents for RT-qPCR diagnostic kits considered a confirmatory test for COVID-19 infection. This manuscript reports on the optimization of the Charité and the CDC RT-qPCR protocols for SARS-CoV-2 detection regarding concentration and volumes of reagents for both probe and intercalant agent-based platforms, as well as on the substitution of rayon swabs for cotton swabs for sample collection. Performance of E and RdRp genes of SARS-CoV-2 RT-qPCRs, based on final reaction volume of 10 µL with 2 µL of RNA (Table 1) , were verified with a relative standard curve built with 10 -2 to 10 -8 dilutions of positive RNA control. Tabela 4 -Probe-based RT-qPCR to the E gene of serial dilutions of SARS-CoV-2 sampled with cotton and rayon swabs. ./cache/cord-352073-rdhjj72g.txt ./txt/cord-352073-rdhjj72g.txt