What is the difference between IgG and IgE testing?
IgE allergies are the most commonly known allergies. These are what we think of as “classic” allergies. Common examples include bee sting resulting in hives, eating peanuts resulting in swelling and the more severe reaction, anaphylactic shock. IgE reactions are immediate and typically easily recognized. IgG sensitivities are much different and less well-known. These are what we think of as “delayed” or “hidden” allergies. IgG sensitivities are more difficult to detect due to the fact that reactions probably will not take place immediately following the consumption of the reactive food. Reaction can also vary. For example, some people with IgG sensitivities might experience muscle and joint aches; others might notice behavioral differences, while still others might experience intestinal symptoms. It should be noted that IgE and IgG reactions are different; that is to say, you can have an IgE allergy to a food and not an IgG sensitivity and vice-versa.
