Just wondering how common this is. I had tTg-IgA and gliandin IgA tested and they both came back at 2, which is without a doubt a “negative result.” However my IgA was 48, the lab cited 79-335 as “normal” and flagged me as low. My PCP said the test shows no celiac, I had already googled and discovered the low IgA situation so I asked her about testing IgG and...