RENBP and COVID-19: Previous studies reported a sensitivity of 93.9% (95% CI, 86.5–97.4%) by Fluorescence Immunochromatographic Assay for 2019-nCoV Ag Test (Bioeasy Biotechnology Co., Shenzhen, China), 50.0% by COVID-19 Ag Respi-Strip CORIS®, and 11.1–45.7% by BIOCREDIT COVID-19 Ag (BioVendor Research and Diagnostic Products) [10–12].