Fig. 2From: Assessing the comparability of cycle threshold values derived from five external quality assessment rounds for omicron nucleic acid testingThe Ct values derived from EQA samples were detected by different extraction kits. a The Ct values determined by different extraction kits combined with BioGerm RT-PCR kit and different PCR instruments, b the Ct values determined by different extraction kits combined with BioGerm RT-PCR kit and ABI7500 PCR instrument, c the Ct values determined by different extraction kits combined with BioGerm RT-PCR kit and SLAN PCR instrumentBack to article page