Diagreat Antigen

The kit uses a sandwich immunoassay to detect nucleocapsid (N) antigen from the SARS-CoV-2 virus, present during infection with COVID-19. As the test detects the viral particles themselves, it allows early detection and, therefore, screening of COVID-19.

In contrast, detection of antibodies can only occur after the body has mounted a response to the virus and has to be performed several days after symptom onset.