Author: Chantal B.F. Vogels; Anderson F. Brito; Anne Louise Wyllie; Joseph R Fauver; Isabel M. Ott; Chaney C. Kalinich; Mary E. Petrone; Marie-Louise Landry; Ellen F. Foxman; Nathan D. Grubaugh
Title: Analytical sensitivity and efficiency comparisons of SARS-COV-2 qRT-PCR assays Document date: 2020_4_1
ID: 6mdimxnk_14
Snippet: All nine primer-probe sets have a similar lower detection limit of 10 2 SARS-CoV-2 genome equivalents/μL. We determined the lower detection limit of nine primer-probe sets as well as the human RNase P control for mock samples (RNA extracted from nasopharyngeal swabs collected in 2017) spiked with known concentrations of SARS-CoV-2 RNA. We performed 6-8 technical replicates with mock samples without spiking RNA and mock samples spiked with 10 0 -.....
Document: All nine primer-probe sets have a similar lower detection limit of 10 2 SARS-CoV-2 genome equivalents/μL. We determined the lower detection limit of nine primer-probe sets as well as the human RNase P control for mock samples (RNA extracted from nasopharyngeal swabs collected in 2017) spiked with known concentrations of SARS-CoV-2 RNA. We performed 6-8 technical replicates with mock samples without spiking RNA and mock samples spiked with 10 0 -10 2 genome equivalent/μL of SARS-CoV-2 RNA. For each primer-probe set, we show the range of cycle threshold values obtained with mock samples extracted from SARS-CoV-2-negative nasopharyngeal swabs, which indicates variation in the lower detection limit of each primer-probe set. ND = not detected. Gray-shaded areas = non-specific amplification.
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