Diagnostic Accuracy of Rapid Antigen Test Based on Anterior Nasal Swab Compared With RT-PCR for SARS-CoV-2 Detection.

Inclusion Criteria: * Citizens, above 18 years of age, who had self-booked an appointment for COVID-19 test at Testcenter Taastrup, Copenhagen, Denmark, in the period of 2nd of March to 22nd of March were offered to participate in the project Exclusion Criteria: * Patients referred to COVID-19 testing by a doctor with symptoms of COVID-19 were tested in a separate section of the test centers and are not included in this study