Figure 4
From: Platinum chloride-based viability RT-qPCR for SARS-CoV-2 detection in complex samples

Validation of viability RT-qPCR with either 1 mM or 2.5 mM PtCl4 on ten-fold diluted nasopharyngeal swabs from COVID-19 positive patients. Plotted dots represents the median cycle threshold value (Ct) of naïve and heat-inactivated (95 °C for 10 min) subsamples assayed by RT-qPCR alone and viability RT-qPCR both targeting N1. Dashed grey line represents RT-qPCR theoretical limit of detection.