A positive herpes IgG test result means you have or had a herpes infection. The herpes IgG test doesn't detect the virus ...

A positive rubella IgG test indicates immunity to rubella, meaning that the pregnant person and the fetus cannot contract this virus. If a person contracts rubella, also known as German measles, ...

Hepatitis A blood tests check for immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies. An IgG-positive and IgM-negative result may suggest immunity to hepatitis A. A doctor may request a ...

Please provide your email address to receive an email when new articles are posted on . Food allergies, intolerances and insensitivities are different. The presence of food-specific IgG has yet to be ...