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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 FREE Celiac.com email alerts   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 Where can I buy gluten-free stuff? Support this site by shopping at The Celiac.com Store.

Help Interpreting Lab Work, Please
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7 posts in this topic

Good afternoon, all!

So, I've had some bloodwork done, Dr. says I am positive for Celiac, but I would like a better understanding of my lab results, I have typed the results exactly as seen on lab report.

I knew before the tests that I was having a problem with gluten, and went gluten-free 5 days before the test (I didn't know!), then I read that one should be consuming gluten for the test, so I panicked and gluten loaded 2 days before....so maybe this threw off some of the results. I will be seeing the gastroenterologist Monday for a consult. I have been feeling so much better since being gluten-free for a few days now, so I am definitely questioning whether I need a biopsy or not, although I understand that biopsy is the "gold standard". I do feel better having some validation from the lab work, but It seems pretty clear to me.

1. Deami. Gliadin Abs, IgA - 46

Neg. 0-19, Weak pos. 20-30, Mod. to Strong pos. 30+

2. Deami. Gliadin Abs, IgG - 97

Same values as above

3. t-Transglutiminase, IgA - 5

Neg. 0-3, weak pos. 4-10, positive 10+

4. t-Transglutiminase, IgG - 3

Same values as above

5. Endomysial Ab, IgA - Positive

positive or negative

6. Immunoglobulin A - 406

Lab report only shows a range of 91-414,

Thanks in advance for any advice.

Edited by ChrisMcD
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Because every lab uses a different " scale", could you post the reference ranges from the lab sheet. Something like:

ABC 12. (0-6 neg, 7-9 weak positive, >p high)

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Because every lab uses a different " scale", could you post the reference ranges from the lab sheet. Something like:

ABC 12. (0-6 neg, 7-9 weak positive, >p high)

Post edited, thank you!

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I see you added the ranges. Looks positive. Others who know more about the test will probably chime in.

Whether you have an endoscopy is up to you. I had one and a colonoscopy at the same time. Here's why: we were really checking for anything else that might be going on with the Celiac - ulcers, colitis, polyps etc and how advanced the Celiac is.

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Yes, those are definite positive results for celiac. We always tell people that cramming gluten in the last couple of days won't affect the results, so, no, that didn't have any bearing on your positive tests. Your tests show that you make a normal amount of antibodies (Immunoglobulin A) so the tests are valid. Your Endomysial Antibodies and Deamidated Gliadin Peptide were both positive and these two tests are the most specific for celiac, so unless you want to find out the level of damage in your small intestine there is no actual reason for the confirmation the biopsy gives that this is, in fact, celiac disease (in my book anyway).. Doctors always like to do it because it is a moneymaker and because of that old gold standard saw, but that was before the blood testing was refined to its present level. Doctors are now coming to accept: symptoms, positive blood results, resolution of symptoms on gluten-free diet, as being diagnostic, although some would want to toss in the genetic testing just to be sure. So it is up to you whether or not you have the biopsy.

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Thanks, Mushroom...I was a little worried, I consulted with a Nutritionist yesterday, and she told me the results were probably altered since I went gluten-free for a few days. Now to have the kids tested, ages 4 and 7. Runs in my family on mother's side. Grandfather was positive and mom has never been tested. Thanks for the quick replies.

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Gluten free would make the results lower. So if these are your results from a few days gluten-free, think how high they might have been on a full gluten diet!

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