FUNCTIONAL MEDICINE BLOG 

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Autoimmune, Good Eating, General Science, Gluten & Casein Autoimmune, Good Eating, General Science, Gluten & Casein

Food allergy testing with IgG4 is not recommended

"...food-specific IgG4 does not indicate (imminent) food allergy or intolerance, but rather a physiological response of the immune system after exposition to food components. Therefore, testing of IgG4 to foods is considered as irrelevant for the laboratory work-up of food allergy or intolerance and should not be performed in case of food-related complaints."

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