500k Covid consumer selftests from Acon Flowflex The Acon Biotech Flowflex SARS-CoV-2 antigen test is a self-test for the detection of the COVID-19 antigen in human nasal swabs. The nasal swab only needs to be inserted 2.5 cm deep into the nasal cavity and the test results can be read in 15-30 minutes. This self-test is easy to use for consumers. With the CE0123 status, Acon Flowflex received, these tests are automatically allowed to be sold to consumers throughout Europe.