id author title date pages extension mime words sentences flesch summary cache txt cord-346978-ubkqny8j Ranoa, Diana Rose E. Saliva-Based Molecular Testing for SARS-CoV-2 that Bypasses RNA Extraction 2020-06-18 .txt text/plain 6476 325 54 35 Using intact, γ-irradiated SARS-CoV-2 spiked into fresh human saliva, which was then heat treated at 95°C for 30 min, we observed outstanding virus detection when saliva samples were combined with either Tris-Borate-EDTA (TBE) or TE buffer ( Figure 3A) . Similar results were observed with heat-inactivated SARS-CoV-2, whereby the LOD was measured to be 5000 viral copies/mL for both RNA extraction of saliva samples and direct saliva-to-RT-qPCR, with greater detection if the virus was directly analyzed in water (Supporting Limit of Detection (LOD) for assessment of SARS-CoV-2 from saliva, comparing a process utilizing RNA isolation/purification to one that bypasses RNA isolation/purification. Altogether, these findings indicate that the optimized protocol (heat treatment of saliva samples at 95°C for 30 min / addition of TBE buffer and Tween 20) yields a LOD that is comparable to reported clinical viral shedding concentrations in oral fluid, thus emphasizing the translatability of the protocol to detecting SARS-CoV-2 in patient samples. ./cache/cord-346978-ubkqny8j.txt ./txt/cord-346978-ubkqny8j.txt