There are several types of immunoglublins that are made in the body. It is important to understand the differences between IgE, IgA and IgG immunoglobulins and when to test for each of them. Immunoglobulins are a class of proteins which function as antibodies produced by the immune system in response to foreign bodies such as food antigens.
An IgE reaction occurs about the time immediately after exposure to the allergen; food or inhalant. This type of reaction is referred to as a Type I immediate hypersensitivity reaction or in some cases anaphylaxis.
An IgG reaction can occur hours to days after exposure to the allergen; food or inhalant. This type of reaction is referred to as a delayed sensitivity reaction.
3210 & 3211 Blood Spot
