Xtrava Covid Test Less Effective with Some Variants: FDA

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 to the FDA Web page on SARS-CoV-2 Viral Mutations: Impact on Covid-19 Tests.

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