What is SARS COV-2 Spike Protein IgG Antibody Test?

The SARS-COV-2 Spike Protein Antibody test is designed to find out the protective immunity level achieved post vaccination and infection in a human body. The test measures the number of antibodies present against the viral spike protein. This test answers whether the individual has protective antibodies that will fight the COVID-19 infection if exposed to the virus.