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# Xtrava Covid Test Less Effective with Some Variants: FDA
- URL: https://www.fdaweb.com/xtrava-covid-test-less-effective-with-some-variants-fda/
- Published: 2023-03-23T12:00:00.000Z
- Updated: 2026-09-14T18:21:48.000Z
- Author: David McFarland
- Tags: Devices, #legacy-id-D5154052

FDA has added the Xtrava Health SPERA Covid-19 Ag Test to the list of tests expected to have a reduced performance with certain SARS-CoV-2 Omicron sub-variants. The Xtrava test was [added](https://content.govdelivery.com/accounts/USFDA/bulletins/3501936?ref=fdaweb.com) to the FDA [Web page](https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/sars-cov-2-viral-mutations-impact-covid-19-tests?utm%5Fmedium=email&utm%5Fsource=govdelivery) on SARS-CoV-2 Viral Mutations: Impact on Covid-19 Tests.