In July I had a scope of my stomach that ruled out celiac or as it is written in the report - neg. for sprue.

I just got back some new blood work and the Gliadin IGG AB was 68.2 ref. range <45. The only other thing out of range wasReticulocytes CGr 35.0 ref. range 25-30. The doctor suggested I try a gluten free diet. But as I understand this it does not indicate celiac. She said give the diet a try and see how I felt.

Is the IGG or the IGA a better marker for celiac?