SARS-COV IgM Test
SARS-COV -2 is an enveloped, single stranded RNA virus of the family Coronaviridae, which is responsible for coronavirus disease 19 (COVID-19). The IgM antibodies test is used to determine whether the individual is exposed to or is infected by covid virus and if they have mounted a specific anti SARS-COV-2 IgM immune response.
When is the SARS-COV-2 IgM antibodies test prescribed?
A doctor may prescribe this test
To use as an aid in identifying individuals with an adaptive immune response to SARS-COV-2, indicating recent infection.
- To detect the severity of the disease as patients with more severe symptoms appear to develop a more robust antibody response with IgM and IgG
- To screen the reason that IgM antibodies detected to COVID-19 are as a result of infection or vaccination.
- In persons who have been exposed to the virus that causes COVID-19 based on the current or previous signs and symptoms (e.g., difficulty in breathing, fever, cough, headache).
- In persons who are living in or have recently travelled to a place where transmission of COVID-19 is known to occur.
- In persons who have been in close contact with an individual suspected of or confirmed to have COVID-19.
What are the components of SARS-COV-2 IgM antibody test?
- Whenever a virus attacks the body, IgM is usually the first antibody produced by the immune system. This test detects IgM antibodies. The current antibody tests for SARS-CoV-2 assess IgM and/or IgG to one of two viral proteins: S or N. The IgM antibody can persist for weeks to months following infection.
Procedure and prerequisites
No special preparation required. The sample of blood is collected from the vein.
|Normal range SARS -COV-2IgM
||<1.0 (index) Negative
>1.0 (index) Positive
A positive IgM test indicates presence of SARS-COV-2 IgM antibody in the blood. This means that the patient had recent exposure and infection by the virus leading to the body developing an immune response.
A negative result indicates absence of SARS-COV-2 IgM antibody in the body.
This test is only for serosurveillance and should not be used to diagnose SARS-COV-2 infection