This test performed to analyze the level of antibodies in your body. These antibodies are known as Immunoglobin which is responsible for the healthy functioning of an immune system of your body. Immunoglobin has different parts depending on your various body components, and here we are talking about the Immunoglobin G can also be termed as IGg. IGg is a type of antibody present in all kind fluids your body poses. It is responsible for maintaining the immunity of all the body fluids including blood, plasma, etc.IGg termed as the most common antibody consisting 70-80% of all the antibodies present in our body. Protecting immunity is essential as it will preserve living being from various kinds of disease and infections. Even the slightest infection can cause a deadly disease to our body. And these help in protecting our immune system.