Utility of COVID‐19 antigen testing in the emergency department

The BinaxNOW coronavirus disease 2019 (COVID‐19) Ag Card test (Abbott Diagnostics Scarborough, Inc.) is a lateral flow immunochromatographic point‐of‐care test for the qualitative detection of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) nucleocapsid protein antigen. It provides results from nasal swabs in 15 minutes. Our purpose was to determine its sensitivity and specificity for a COVID‐19 diagnosis.