RT Journal Article SR Electronic T1 Detection of SARS-CoV-2 RNA by multiplex RT-qPCR JF bioRxiv FD Cold Spring Harbor Laboratory SP 2020.06.16.155887 DO 10.1101/2020.06.16.155887 A1 Eriko Kudo A1 Benjamin Israelow A1 Chantal B.F. Vogels A1 Peiwen Lu A1 Anne L. Wyllie A1 Maria Tokuyama A1 Arvind Venkataraman A1 Doug E Brackney A1 Isabel M. Ott A1 Mary E. Petrone A1 Rebecca Earnest A1 Sarah Lapidus A1 M. Catherine Muenker A1 Adam J. Moore A1 Arnau Casanovas-Massana A1 Yale IMPACT Research Team A1 Saad B. Omer A1 Charles S. Dela Cruz A1 Shelli F. Farhadian A1 Albert I. Ko A1 Nathan D. Grubaugh A1 Akiko Iwasaki YR 2020 UL http://biorxiv.org/content/early/2020/06/17/2020.06.16.155887.abstract AB The current RT-qPCR assay recommended for SARS-CoV-2 testing in the United States requires analysis of three genomic targets per sample: two viral and one host. To simplify testing and reduce the volume of required reagents, we developed a multiplex RT-qPCR assay to detect SARS-CoV-2 in a single reaction. We used existing N1, N2, and RP primer and probe sets by the CDC, but substituted fluorophores to allow multiplexing of the assay. The cycle threshold (Ct) values of our multiplex RT-qPCR were comparable to those obtained by the singleplex assay adapted for research purposes. Low copies (>500 copies / reaction) of SARS-CoV-2 RNA were consistently detected by the multiplex RT-qPCR. Our novel multiplex RT-qPCR improves upon current singleplex diagnostics by saving reagents, costs, time and labor.Competing Interest StatementThe authors have declared no competing interest.