Cytomegalovirus IgM Antibody details
What Cytomegalovirus IgM Antibody shows
This IgM antibody test indicates a recent or currently active cytomegalovirus (CMV) infection, as opposed to the IgG test, which reflects past infection and long-term immunity. It's particularly important during pregnancy, since a new (primary) CMV infection carries a higher risk of affecting fetal development than a past infection or reactivation, and in people with weakened immune systems, where an active infection may require treatment. Because IgM results can occasionally be falsely positive or persist longer than expected, they're sometimes confirmed with additional testing, such as IgG avidity testing, which helps determine how recently the infection actually occurred.
Tests that include Cytomegalovirus IgM Antibody
Cytomegalovirus (CMV) IgM Antibodies indicate recent or active infection with CMV. Detection of IgM antibodies helps diagnose primary or reactivated CMV infections, particularly important in immunocompromised individuals and pregnant women.
- Cytomegalovirus IgM Antibody Indicates a recent or active CMV infection, as opposed to past exposure.
Cytomegalovirus (CMV) IgM Antibodies indicate recent or active infection with CMV. Detection of IgM antibodies helps diagnose primary or reactivated CMV infections, particularly important in immunocompromised individuals and pregnant women.
- Cytomegalovirus IgM Antibody Indicates a recent or active CMV infection, as opposed to past exposure.
Intrauterine or congenital CMV infections occur in 0.5 to 2.2% of all live births. Symptomatic congenital infections usually occur in infants born to non-immune mothers who have primary infections during pregnancy. Latency and reactivation of CMV influence the interpretation of serological results. A single positive CMV IgG result is and indication of present or past infection. The presence of CMV IgM suggests a recent CMV exposure but does not differentiate between primary infection and reactivation.
- Cytomegalovirus IgG Antibody Indicates past exposure or infection with cytomegalovirus (CMV), a common virus that's usually harmless but can be a concern during pregnancy or with a weakened immune system.
- Cytomegalovirus IgM Antibody Indicates a recent or active CMV infection, as opposed to past exposure.
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