Evaluation of the clinical performance of a magnetic force-assisted electrochemical immunoassay for the detection of SARS-CoV-2 antigens
Fig 1
RT-PCR and MARK-B test results.
(A) Peak current values of RT-PCR-positive and RT-PCR-negative samples. (B) Correlation between peak current values (MARK-B, log2 scale) and the Ct values of the RdRp gene (60 RT-PCR-positive samples; ○, MARK-B false negative). (C) Receiver operating characteristic (ROC) curve analysis. The MARK-B test indicated an area under the ROC curve value of 0.930 (95% CI 0.880–0.963). Dotted line: lot-specific cut-off (8.325 μA), ****P < 0.0001.