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. 2022 Feb 22;8(2):e08998. doi: 10.1016/j.heliyon.2022.e08998

Figure 1.

Figure 1

Scatter dot blot indicating positivity (green dot) and negativity (red dot) of the rapid saliva antigen tests in association to RT-qPCR Ct-values for the envelope gene. Two saliva samples were positive only for the RdRp gene (triangle) and are marked with corresponding RdRp Ct-values. DIAGNOS™ detected nine and Rapid Response™ seven of the 18 RT-qPCR positive samples in the COVID-19 cohort (left panel). Using live SARS-CoV-2 titrated in 10-fold dilutions of saliva (right panel), DIAGNOS test exhibited higher sensitivity compared to the Rapid Response test. Green/red dot indicate weak positivity (+/-).