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All Of These Tests...


KathiSharpe

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KathiSharpe Apprentice

So I have a question. Actually, three. Or four. Or six. B)

#1 - if my new doc is unwilling to dx me on the spot and wants to send me for tests, what specifically do I need to ask for (to make sure she actually runs all the right tests!)

#2 - I see the big ads to either side of the forum :P Is the genetic testing worth doing? And I think there was an ad or discussion on stool sampling resulting in diagnosis when blood and even biopsy failed?? These all seem to be done through private labs. Are the same tests done by conventional labs with doc's orders? Will insurance cover this sort of testing?

#3 - I keep seeing people talk about iGa and iGg (hope I got the right letters capitalized?) and how if your body doesn't make these, or make enough of them, the blood test can be a false negative.

I googled it and came across something confusing about the relationship between these (antibodies??) and the immune system and that people who are low in these also have difficulty fighting infection - ranging from serious illnesses to just catching bugs that go around - and this inability to fight off infection includes difficulty in mounting a fever.

That'd be me, folks - I catch every little bug that goes around and I don't run a fever above 99.1 even with a raging strep throat. Normal body temp ranges between 96.6 and 97.0. Very hard to convince a doc that you have a fever at 98.6!

So is what I'm reading correct? Or am I extrapolating too much out of too little? (and if that is right, does eating gluten-free resolve the immune problems?)

If so, it seems likely that this may be a part of my problem - and would answer why the blood tests were negative a couple years ago.


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Mother of Jibril Enthusiast

Some quick answers to your questions...

#1 - if my new doc is unwilling to dx me on the spot and wants to send me for tests, what specifically do I need to ask for (to make sure she actually runs all the right tests!)

Nobody can diagnose you with celiac disease "on the spot." The blood tests should include:

- Antigliaden IgA

- Antigliaden IgG

- Tissue transglutaminase IgA

- Tissue transglutaminase IgG

- Endomysial antibodies (EMA)

- Total IgA

#2 - I see the big ads to either side of the forum :P Is the genetic testing worth doing? And I think there was an ad or discussion on stool sampling resulting in diagnosis when blood and even biopsy failed?? These all seem to be done through private labs. Are the same tests done by conventional labs with doc's orders? Will insurance cover this sort of testing?

Personally (unless you have tons of money to throw around) I would go one step at a time. Start with the blood test.

#3 - I keep seeing people talk about iGa and iGg (hope I got the right letters capitalized?) and how if your body doesn't make these, or make enough of them, the blood test can be a false negative.

I googled it and came across something confusing about the relationship between these (antibodies??) and the immune system and that people who are low in these also have difficulty fighting infection - ranging from serious illnesses to just catching bugs that go around - and this inability to fight off infection includes difficulty in mounting a fever.

Yes, but it's usually not a big problem. There are people on this board who are IgA deficient.

That'd be me, folks - I catch every little bug that goes around and I don't run a fever above 99.1 even with a raging strep throat. Normal body temp ranges between 96.6 and 97.0. Very hard to convince a doc that you have a fever at 98.6!

Have you ever had your thyroid checked? That's a common cause of low body temperature.

(and if that is right, does eating gluten-free resolve the immune problems?)

A gluten-free diet might help a lot, but it's not a cure for everything. Celiac disease is the only autoimmune disorder with a known "cure" (stop eating gluten and your immune system stops attacking your intestines).

Amyleigh0007 Enthusiast

I can help you with question #2! I had gene testing done as a last resort. My blood test was negative and I have been gluten free for over a year so biopsy was out of the question. There was no way I was going to eat gluten for 3 months to have one. So, as a way to gain more information about my health, I did gene testing through Enterolab. You do not need a doctor's order. I did not bother to turn it into my insurance because I knew they wouldn't cover it. I was $174. I learned ALOT! Not only about me but about my daughter and my parents. MOJ is right. Gene testing should be done after everything else.

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    • Scott Adams
      This is a very common question, and the most important thing to know is that no, Guinness is not considered safe for individuals with coeliac disease. While it's fascinating to hear anecdotes from other coeliacs who can drink it without immediate issues, this is a risky exception rather than the rule. The core issue is that Guinness is brewed from barley, which contains gluten, and the standard brewing process does not remove the gluten protein to a level safe for coeliacs (below 20ppm). For someone like you who experiences dermatitis herpetiformis, the reaction is particularly significant. DH is triggered by gluten ingestion, even without immediate gastrointestinal symptoms. So, while you may not feel an instant stomach upset, drinking a gluten-containing beer like Guinness could very well provoke a flare-up of your skin condition days later. It would be a gamble with a potentially uncomfortable and long-lasting consequence. Fortunately, there are excellent, certified gluten-free stouts available now that can provide a safe and satisfying alternative without the risk.
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    • Butch68
      Before being diagnosed coeliac I used to love Guinness. Being made from barley it should be something a coeliac shouldn’t drink. But taking to another coeliac and they can drink it with no ill effects and have heard of others who can drink it too.  is this everyone’s experience?  Can I drink it?  I get dermatitis herpetiformis and don’t get instant reactions to gluten so can’t try it to see for myself. 
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    • Scott Adams
      I will assume you did the gluten challenge properly and were eating a lot of gluten daily for 6-8 weeks before your test, but if not, that could be the issue. You can still have celiac disease with negative blood test results, although it's not as common:  Clinical and genetic profile of patients with seronegative coeliac disease: the natural history and response to gluten-free diet: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5606118/  Seronegative Celiac Disease - A Challenging Case: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9441776/  Enteropathies with villous atrophy but negative coeliac serology in adults: current issues: https://pubmed.ncbi.nlm.nih.gov/34764141/  Approximately 10x more people have non-celiac gluten sensitivity than have celiac disease, but there isn’t yet a test for NCGS. If your symptoms go away on a gluten-free diet it would likely signal NCGS.
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