RENBP and COVID-19: According to the manufacturers, the Ag-RDTs used in this study have a sensitivity of 83.3 % and a specificity of 99.7 % for the IBMP TR Covid Ag Kit and a sensitivity of 90.3 % and a specificity of 98.8 % for the TR DPP® COVID-19 – Ag - Bio-Manguinhos.