Measles IgM

Measles, also popularly known as Rubeola, causes fever, irritability, respiratory illness, and the characteristic skin rash. Immunization has greatly diminished the incidence of measles. The presence of IgG or a four-fold increase in IgG titer is consistent with a recent infection. IgM tests can generate false-positive results. Low levels of IgM can persist for longer then 12 months.