Fig. 4 |. DISCoVER for extraction-free detection of saliva.
a, Direct saliva lysis conditions were tested for compatibility with the DISCoVER workflow. Replicates that did not amplify are represented at 0 min. Error bars represent mean ± s.d. of amplified technical replicates, n = 4. IA, inactivation reagent; QE, QuickExtract. b, Schematic of contrived saliva sample generation, quantification via RT–qPCR, and detection via DISCoVER to determine analytical sensitivity. c, Fold change in DISCoVER signal relative to NTC on SARS-CoV-2-positive saliva samples at 5 min of Cas13 detection. Error bars show mean ± s.d. with n = 20 biological replicates. d, Fold change in DISCoVER signal relative to NTC on 30 negative saliva samples collected before November 2019, at 5 min of Cas13 detection.
