Immunoglobulin G (IgG)

Immunoglobulins are proteins produced by plasma cells, a type of white blood cells and are an important part of your defense system. There are 5 types of immunoglobulins namely IgG, IgM, IgA, IgE & IgD. Immunoglobulin G is an important component that constitutes 80% of the total immunoglobulins in your body and protects against germs. IgG takes sometime to form after an infection or vaccination. It usually indicates past infection to a bacteria or virus.