No fasting required.

The Elisa / CLIA TEST is a serological test – it is obtained through a blood sample – that detects antibodies to the SARS-CoV-2 virus in a quantitative way. It provides reliable information on two values: IgG type antibodies (past infection).

This is one of the most reliable tests today to know if antibodies have been created against COVID-19 or not. If the results provide IgG antibodies, it is confirmed that the patient has a past infection; that is, they have had the disease at some point.