For fecal anti-gliadin antibodies, which gliadin peptide is measured?

The Gut Zoomer measures fecal IgA alpha gliadin antibodies.

The Wheat Zoomer measures serum IgA and IgG antibodies to alpha gliadin, alpha-beta gliadin, gamma gliadin, and omega-gliadin. 

It is important to note that concentrations of IgA alpha-gliadin antibodies in serum may differ from concentrations of fecal IgA anti-gliadin in stool.  

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