IgG is a type of antibody produced by the immune system. IgG to specific foods circulate in the blood, and many practitioners claim this causes poor health. However, several research studies have not supported this theory. The Guidelines for the Diagnosis and Management of Food Allergy in the United States does not recommend IgG testing in clinical practice. Note: IgG and IgE blood tests are two completely separate tests.
Posted in: Fall2013-Q&A