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Clinical performance of SARS-CoV-2 immunoassays. A) Comparison of SARS-CoV-2 immunoassays results between COVID-19 patients and control patients. Black arrow indicates the heart transplant patient who tested negative with all immunoassays more than 14 days after onset of symptoms. B) ROC curves for evaluation of performances of SARS-CoV-2 immunoassays for samples ≥14 days post onset of symptoms.
