EYECARE: Coronavirus BRIEFING: Crisis Response Tactics COVID-19 Antigen Tests May Be Less Sensitive to Omicron: FDA By Staff Thursday, December 30, 2021 9:02 AM Rapid antigen tests for COVID-19 might be less effective at detecting the Omicron variant that is spreading rapidly across the United States, according to the US Food and Drug Administration (FDA).Early data suggest that COVID-19 antigen tests "do detect the omicron variant but may have reduced sensitivity," the FDA said in a statement posted December 28 on its website.The FDA is working with the National Institutes of Health's Rapid Acceleration of Diagnostics (RADx) initiative to assess the performance of antigen tests with patient samples that have the Omicron variant. Head over to Medscape to read the full story.