Human Herpesvirus 6 (HHV-6), IgM Labcorp test 138529

This test measures IgM antibodies in the blood, which are specific proteins the immune system creates shortly after encountering Human Herpesvirus 6 (HHV-6). It helps show whether a person has a recent infection, reinfection, or reactivation of the virus, which is often associated with fever and rash.