Hi! I was diagnosed with celiac disease in 2014 on the basis of a positive tTG-IgG test. My doctor ordered only tTG-IgA and tTG-IgG tests for me; I tested negative on the IgA test, but didn't have a total serum IgA test, so I don't know if I'm deficient. I didn't have a biopsy, but my life changed dramatically for the better after adopting the gluten-free...