The IgG Food Allergy test measures the presence of IgG antibodies to specific food proteins. If excessive intestinal permeability (leaky gut) is present, small amounts of food proteins enter the bloodstream. The immune system builds an antibody to those foreign proteins, predominately as IgG. IgG antibodies do not produce the immediate histamine response we associate with IgE antibodies--a runny nose or hives, for example. Therefore IgG reactions are often termed "food sensitivities" or "food intolerance." IgG reactions tend to be more subtle-headaches, muscle aches or cognitive dysfunction.
A food elimination diet can be established based on results of this test and improvement of symptoms can be monitored.
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