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      Frequently Asked Questions About Celiac Disease   09/30/2015

      This Celiac.com FAQ on celiac disease will guide you to all of the basic information you will need to know about the disease, its diagnosis, testing methods, a gluten-free diet, etc.   Subscribe to Celiac.com's FREE weekly eNewsletter   What are the major symptoms of celiac disease? Celiac Disease Symptoms What testing is available for celiac disease? - list blood tests, endo with biopsy, genetic test and enterolab (not diagnostic) Celiac Disease Screening Interpretation of Celiac Disease Blood Test Results Can I be tested even though I am eating gluten free? How long must gluten be taken for the serological tests to be meaningful? The Gluten-Free Diet 101 - A Beginner's Guide to Going Gluten-Free Is celiac inherited? Should my children be tested? Ten Facts About Celiac Disease Genetic Testing Is there a link between celiac and other autoimmune diseases? Celiac Disease Research: Associated Diseases and Disorders Is there a list of gluten foods to avoid? Unsafe Gluten-Free Food List (Unsafe Ingredients) Is there a list of gluten free foods? Safe Gluten-Free Food List (Safe Ingredients) Gluten-Free Alcoholic Beverages Distilled Spirits (Grain Alcohols) and Vinegar: Are they Gluten-Free? Where does gluten hide? Additional Things to Beware of to Maintain a 100% Gluten-Free Diet What if my doctor won't listen to me? An Open Letter to Skeptical Health Care Practitioners Gluten-Free recipes: Gluten-Free Recipes

Help With Lab Results

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My doctor ordered four labs after my endoscopy came back as maybe Celiac's. They are

deamidated gliadin abs, IgA - 3

Deamidated gliadin abs, IgG - <1

Immunoglobulin A Qn, serum 170. - <2

to trans glut am I made (tTG) - <2

So, soundly negative. My question is, would ask of these be affected by having eaten a very small about of gluten for three months (was eating low carb, no bread, pasta, crackers etc).

Also, is there something else that effects results, like IgG deficiency? I want to be certain of what's wrong, but I dread doing a gluten challenge. Makes me so sick and I feel so much better when I don't eat it.

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IGA deficient blood test can cause a false negative.


Eating gluten is key for testing. Here is a link that covers all you need to know.




Good Luck



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Is your IgA (Immunoglobulin A) low?  Is the normal 170 and you are less than 2 (<2) ?  If so, low IgA will cause false negatives in any IgA based tests (tTG IgA or DGP IgA - which I think you had done).


What are the normal ranges of your celiac disease tests?  The ranges vary from 0-1 up to 0-20.

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