Diminished amplification of SARS-CoV-2 ORF1ab in a commercial dual-target qRT-PCR diagnostic assay.Here we describe a SARS-CoV-2 variant with diminished amplification of the ORF ORF1ab target in the Cobas® dual-target SARS-CoV-2 assay resulting in a discrepancy of Ct-values (Ct-value 20.7 for the E-gene and Ct-value 30.2 for ORF1ab). 
Cobas
Diminished amplification of SARS-CoV-2 ORF1ab in a commercial dual-target qRT-PCR diagnostic assay.Here we describe a SARS-CoV-2 variant with diminished amplification of the ORF ORF1ab target in the Cobas® dual-target SARS-CoV-2 assay resulting in a discrepancy of Ct-values (Ct-value 20.7 for the E-gene and Ct-value 30.2 for ORF1ab). 
Cobas