Inclusion Criteria:  Age ≥ 16 years Having a scheduled appointment for a COVID-19 test at one of the test centers run by Testcenter Danmark in the Capital Region  Exclusion Criteria:  Non-fluent in Danish Impaired citizen i.e. not capable of an independent self-testing Neck breathers (Tracheostomy/laryngectomy patients) Nasopharyngeal or oropharyngeal anomalies disallowing sampling using swabs