Study participants who went on an IgG-based elimination diet--based on a novel blood test--experienced less abdominal pain than those on a sham diet.

With allergies on the rise ... no diagnosis of a food intolerance can be made from an IgG test. Your IgG antibody levels will fluctuate daily depending on what you have been eating recently.

Replaced by ATA or anti-tTG. ¶Tests for deamidated gliadin antibodies are considered experimental by Aetna. IgG DPGs and AGAs appear to have specificity for celiac disease and gluten sensitivity ...