Covid Antibody Test

Quantitative IgG antibody measurement is a good correlation to virus neutralising titre and reflects the level of a person’s immunity response over time. After vaccination, IgG antibody neutralising activity is detectable after 2 weeks. There is a Rapid Memory Response (further increase in IgG titres) 1-2 weeks after the 2nd dose which then gradually decreases over the next 6 months.