Antigen test is recognised as the standard to detect SARS-CoV-2 virus and diagnose COVID-19. The genome of SARS-CoV-2 encodes four structural proteins, known as the S (spike), E (envelope), M (membrane) and N (nucleocapsid) proteins. Lifotronic SARS-CoV-2 antigen detection kit is designed to detect the existence of SARS-CoV-2 virus by identifying N protein.