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How to get tested for celiac


Bailey55

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Bailey55 Newbie

Hi! I am just wondering what I should ask of my doctor to get tested for celiac, I want to make sure it's the best option (I see there are different ways)...what tests and steps will give the best result??

I've always felt I was celiac from my symptoms, I had been tested previously however I wasn't eating gluten at the time and had only started a week (maybe if that) before the test...the results were negative (but I knew that wasn't correct)... Fast forward a couple years and I just found out my biological mother and aunt are celiac..anyways any help would be appreciated I just want to be prepared for my apt..I've also been eating gluten for sometime a month or more, I'm from Canada I'm not sure that it matters for testing but just in case...thanks everyone!!!


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cyclinglady Grand Master

 

Here are the tests:

 
-Tissue Transglutaminase (tTG) IgA and (tTG) IgG
-Deamidated Gliadin Peptide (DGP) IgA and (DGP) IgG
-EMA IgA 
-total serum IgA and IgG (control tests)
 
Note:
 
-AGA IGA and AGA IgG - older and less reliable tests largely replace by the DGP tests
 
-endoscopic biopsy - make sure at least 6 samples are taken
 
VERY IMPORTANT:  Keep eating gluten daily until ALL testing is complete or the tests can be inaccurate.  For blood tests consume gluten daily for 8 to 12 weeks.  The endoscopy requires 2 to 4 weeks. 
 
(Source: NVSMOM -- ?)

 

Welcome to the forum and let us know how it goes! 

 

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    • trents
      Possibly. Your total IGA (Immunoglobulin A, Qn, Serum) is actually high so you are not IGA deficient. In the absence of IGA deficiency, the most reliable celiac antibody test would be the t-Transglutaminase (tTG) IgA for which your score is within normal range. There are other things besides celiac disease that might cause an elevated DGP-IGA (Deamidated Gliadin Abs, lgA) for which you do have a positive score. It might also be of concern that your total IGA is elevated as that can indicate some other health problems, some of which are serious.  Had you been practicing a gluten free or a reduced gluten free diet prior to the blood draw? Talk to your physician about these things. I would also seek an endoscopy/biopsy of the small bowel to check for damage to the villous lining, which is the gold standard diagnostic test for celiac disease.
    • MicG
      Test results as follows: Deamidated Gliadin Abs, lgA 40 H (normal range 0-19) Deamidated Gliadin Abs, IgG 4 (0-19) t-Transglutaminase (tTG) IgA <2 (0-3) t-Transglutaminase (tTG) IgG <2 (0-5) Endomysial Antibody IgA Negative (Negative) Immunoglobulin A, Qn, Serum 535 H (87-352) Do I have celiac?
    • catnapt
      how long does it take for the genetic blood test for celiac to come back? I saw the GI today, she was great. She says I def have an issue with gluten and that my symptoms align more with celiac disease than NCGS, so she's doing the genetic testing, Ordered a test for SIBO but said that's just to cover all bases, she doesn't think I have that. If the blood work comes back negative for the genes, then I will cancel the endoscopy. If positive, I will try the 2 week gluten challenge and get the endoscopy done. If I can't manage the gluten challenge (I had HORRIBLE symptoms last time and quit after 12 days) then we'll just assume it's celiac disease and go from there. She says she does a full nutrient panel on all her pts every year, that was nice to hear.I'm on so many supplements it would be nice to only have to get the ones I truly need! so yeh, really anxious about the test results for the genes!! I have an identical twin sister so I'd need to tell her if it's positive, she'd prob want to get tested too. *interesting note: when I said if the blood work comes back that I don't have the genes, then I'm in the clear - she said, well,,,,,,not necessarily. But she didn't want to go into as we had a lot to go over. I did make a  mental note of that comment and will ask her when I see her next time.   she was very thorough! I was impressed! she even checked- up on some lab work I had done that my Endo ordered. I like her, I am looking forward to seeing her again. I think I'll get some good advice and info from her she also complimented me on my diet.   said it was a very gut friendly and healthy diet 
    • Scott Adams
      I'm not sure why "colonoscopy" keeps coming up for you, again it would be an endoscopy to diagnose celiac disease, but it seems that Kaiser should still have your records. If you were diagnosed by them in the 1990's using a blood test and endoscopy, then you definitely have celiac disease, and hopefully you've been gluten-free since that time. You should be able to contact Kaiser for those records.
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      This sounds like a GP who is ignorant regarding coeliac disease. The risk with consuming gluten for several days is that it triggers the coeliac immune response, leading to raised auto-antibodies and active disease for several months. People may not even be aware of symptoms during this process, but it is causing damage to the body. As trents has said, the gut lining normally recovers on a strict gluten-free diet, and this happens much faster in children than in adults.
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