They did test for tTG-IgA and it was undetectable (<1.0) but my total IgA was also undetectable (<5) and flagged as low. They stated that I have selective IgA deficiency. There were 5 thing measured in total on the panel, tTG-IgA, total IgA, tTG-IgG (1.0, <15 is normal), Gliaden IgA, Gliaden IgG
Gliaden IgG was flagged as high, total IgA flagged...