In the Research Letter titled “Validation of an At-Home Direct Antigen Rapid Test for COVID-19,”1 published August 27, 2021, the combined sensitivity of the direct antigen rapid test should have been 96.2% (95% CI, 88.8%-100.0%), not 96.3% (95% CI, 89.5%-100.0%). These numbers appeared in the Results, Discussion, and Table. This article has been corrected.1