RT Journal Article SR Electronic T1 Comparison of SARS-CoV2 N gene real-time RT-PCR targets and commercially available mastermixes JF bioRxiv FD Cold Spring Harbor Laboratory SP 2020.04.17.047118 DO 10.1101/2020.04.17.047118 A1 Julianne R Brown A1 Denise O’Sullivan A1 Rui PA Pereira A1 Alexandra S Whale A1 Eloise Busby A1 Jim Huggett A1 Kathryn Harris YR 2020 UL http://biorxiv.org/content/early/2020/04/19/2020.04.17.047118.abstract AB We aim to test four one-step RT real-time mastermix options for use in SARS-CoV2 real-time PCR, with three primer/probe assays targeting the N gene. The lower limit of detection is determined using a SARS CoV2 N gene RNA transcript dilution series (to 1 copy/µl) and verified using 74 nose and throat swabs.The N2 assay demonstrates the most sensitive detection of SARS-Cov-2 RNA. Three of the four mastermixes performed well, with the Takara One Step PrimeScript™ III RT-PCR Kit mastermix demonstrating improved performance at the lower limit of detection.Competing Interest StatementThe authors have declared no competing interest.