Accurate and Reliable Antiviral Immunoglobulin-M (IgM) Against COVID-19 Testing
The first antibody produced by the immune system during a viral infection is IgM. A positive IgM antibody test indicates that the virus may be present and that your body has started the immune response. When IgM is detected you may currently be infected, or you may have recently recovered from a COVID-19 infection. Our antiviral Immunoglobulin-M (IgM) antibody assay can accurately detect “acute” infection by looking at an individual’s immune response.
When to Test for Presence of IgM?
Typically, symptom onset starts around day five and the body will begin to develop IgM antibodies around 8 days post infection (compared to IgG antibodies, which develop around 14 days post infection).
Negative results to an IgM test do not rule out SARS-CoV-2 infection, especially for individuals who have been in contact with someone who was recently tested positive for COVID-19. Follow-up testing with a molecular diagnostic (RT-PCR test) should be considered to definitely rule out infection.