Figure 4.

Analysis of pooled (1:5 and 1:10) saliva and swab paired samples. Saliva and nasopharyngeal swab pools were generated by mixing one positive sample with four/nine known negative samples. Positive samples with early and late Ct of the N gene were selected to evaluate the impact of dilution on its detection. (A) and (B) show saliva pooled 1:10; (C) and (D) show nasopharyngeal swab pooled 1:10; (E) shows saliva pooled 1:5.