<<Disclaimer: Verify this information before applying it to your situation.>>
I believe I have written before on this topic to the list.
The IgG anti gliadin may be postive alone for many reasons including
1. The person doesnot have CD
2. The person has CD and IgA defiency
3. The person has latent gluten senstivity i.e. There is evidence for
serum antibodies but a completely normal small intestine and no symptoms
4. The other antibody tests are wrong and the person does have CD
5. Occassional low level positives can be seen in normals , people with
giardiasis, crohn's disease.
Joe Murray
disclaimer( not medical advice)