Fig. 1From: Performance of SARS-CoV-2 antigen testing in symptomatic and asymptomatic adults: a single-center evaluationCorrelation of Cepheid Positives with Sofia Results. Cepheid CT values for positive samples were plotted against Sofia results (positive or negative). Black closed circles = Cepheid and Sofia positive; Red open circles = Cepheid positive and Sofia negative; arrows denote the two asymptomatic patients that went on to develop COVID-19 diseaseBack to article page