COVID-19-SARS-CoV-2 IgG blood test
WHAT IS THE SARS-COV-2 IGG TEST?
The SARS-CoV-2 IgG assay is intended for the qualitative detection of class G immunoglobulin antibodies (IgG) directed against the core protein of SARS-CoV-2 in the serum and plasma of patients suspected of having been infected with coronavirus (COVID-19).
WHY IS THIS TEST PRESCRIBED?
The SARS-CoV-2 IgG assay is intended for use as an aid in identifying individuals with an adaptive immune response to SARS-CoV-2, indicating recent or prior infection. At this time, it is unknown for how long antibodies persist following infection and if the presence of antibodies confers protective immunity. The SARS-CoV-2 IgG assay should not be used to diagnose acute SARS-CoV-2 infection.
IgG antibodies to SARS-CoV-2 are generally detectable in blood several days after initial infection. Individuals may have detectable virus present for several weeks following seroconversion.