Jump to content

  • Welcome to Celiac.com!

    You have found your celiac tribe! Join us and ask questions in our forum, share your story, and connect with others.



  • Celiac.com Sponsor (A1):

    Celiac.com Sponsor (A1-M):

  • Get Celiac.com Updates:
    Support Our Content
    eNewsletter
    Donate

Test Results How Reliable?

TomBone

Recommended Posts

TomBone Newbie
TomBone
Posted

Hi all, happy to find this forum!

In the last few months I've had stomach & digestion issues and wanted to check whether it has anything to do with gluten.

I used to eat at least 2 loafs of bread every day as well as other products which seem to have gluten (beer, cookies, soy sauce, etc.).

The doc I asked for a test, made me do four different tests (sorry if the test names are not 100% correct, I'm trying to translate them from Spanish):

 

Antic. Anti endomysial IgA - negative
Antic. Anti endomysial IgG - negative
Transglutaminasa IgG - 9.7U/ml (positive above 10)
Transglutaminasa IgA - 8.3U/ml (positive above 10)

Now, I'm wondering what exactly those results mean. On first sight, they are negative, but Transglutaminasa IgG is very close to the threshold. In fact, I stopped eating bread around 2 weeks before the test (but occasionally had things with gluten) and didn't drink beer for more than 2 months. Could the values have dropped just below the threshold because of that?

How high are valued typically if you have celiac disease? Would they be well over 10U/ml?

I'm hesitant to do any additional testing due to the high cost (my insurance refuses to cover it).

 

Also, from what I've read it's possible to be gluten intolerant but celiac disease negative? Are the negative effects on the gut similar in both cases or is it health-wise ok to eat gluten if intolerant?
Sorry for the very basic questions but I'm pretty new to all this and find the available information quite confusing...

 

Celiac.com Sponsor (A8):
Celiac.com Sponsor (A8):

Celiac.com Sponsor (A8-M):


nvsmom Community Regular
nvsmom
Posted

I like to refer to this report when discussing test reliability: Open Original Shared Link 

On page 12 it shows the sensitivity of the EMA IgA and tTG IgA, which is the likelihood of the disease being caught by the test.  Both tests can miss up to 25% of celiacs with a sensitivity of 75-100% and 75-95%. They are pretty good tests for most celiacs.

 

The endomysial tests (EMA) are similar to the tTG tests but they tend to detect more advanced disease.  If you are relatively new to celiac disease, it is possible to get a positive tTG with a negative EMA.  It is very unusual for a celiac to get a positive EMA with a negative tTG though.

 

The tTG IgG is not a very sensitive test.  It's sensitivity is as low as 40% which means it can miss the majority of celiacs.  This report discusses it a bit: Open Original Shared Link

 

Your tTG results are both fairly close to being positive and I would be suspicious too.  You might want to request the DGP IgA and DGP IgG (deaminated gliadin peptides) tests.  Those tests are the best for detecting early celiac disease and sometimes catch cases of celiac disease that the tTG tests do not.  

 

Make sure you are eating gluten in the 2-3 months prior to testing.

 

Another option is the biopsy.

 

If you can't get further testing, or the tests are negative, you should be retested every year or so if you continue to eat gluten.  If you decide to go gluten-free anyways, further testing is not crucial.

 

Best wishes and welcome to the board.  :)

TomBone Newbie
TomBone
Posted
  • Author

Nicole, I appreciate your reply and link to the report. I will check with my doctor if they can do DGP tests here.

nvsmom Community Regular
nvsmom
Posted

Good luck!

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Get Celiac.com Updates:
    Support Celiac.com:
    Join eNewsletter
    Donate
  • Celiac.com Sponsor (A17):
    Celiac.com Sponsor (A17):



    Celiac.com Sponsors (A17-M):



  • Recent Activity

    1. knitty kitty
      - knitty kitty replied to Jmartes71's topic in Related Issues & Disorders
      10

      My only proof

      Hello, @NanceK, I'm glad you're willing to give Benfotiamine with B Complex another go! I'm certain you'll feel much better. Yes, supplementation is a good idea even if you're healing and gluten free. The gluten free diet can be low in B vitamins and other nutrients. A nutritionist can help guide you to a nutrient dense diet, but food sensitivities...
    2. NanceK
      - NanceK replied to Jmartes71's topic in Related Issues & Disorders
      10

      My only proof

      Oh wow! Thanks for this information! I’m going to try the Benfotiamine again and will also add a B-complex to my supplements. Presently, I just take sublingual B12 (methylcobalomin). Is supplementation for celiacs always necessary even though you remain gluten-free and you’re healing as shown on endoscopy? I also take D3, mag glycinate, and try to get cal...
    3. knitty kitty
      - knitty kitty replied to Hmart's topic in Celiac Disease Pre-Diagnosis, Testing & Symptoms
      13

      Is this celiac?

      @Hmart, The reason why your intestinal damage was so severe, yet your tTg IgA was so minimal can be due to cutting back on gluten (and food in general) due to worsening symptoms. The tTg IgA antibodies are made in the intestines. While three grams of gluten per day for several weeks are enough to cause gastrointestinal symptoms, ten grams of gluten...
    4. Trish G
      - Trish G replied to Trish G's topic in Gluten-Free Foods, Products, Shopping & Medications
      10

      Fiber Supplement

      Thanks, that's a great addition that I hadn't thought of.
    5. trents
      - trents replied to Hmart's topic in Celiac Disease Pre-Diagnosis, Testing & Symptoms
      13

      Is this celiac?

      Other diseases, medical conditions, medications and even (for some people) some non-gluten foods can cause villous atrophy. There is also something called refractory celiac disease but it is pretty uncommon.
  • Celiac.com Sponsor (A19):


  • Member Statistics

    • Total Members
      132,362
    • Most Online (within 30 mins)
      7,748
    Nannynet
    Newest Member
    Nannynet
    Joined
  • Celiac.com Sponsor (A20):

  • Forum Statistics

    • Total Topics
      121.5k
    • Total Posts
      1m
  • Celiac.com Sponsor (A22):



  • Celiac.com Sponsor (A21):


  • Upcoming Events

  • Posts

    • knitty kitty
      My only proof

      By knitty kitty · Posted

      Hello, @NanceK, I'm glad you're willing to give Benfotiamine with B Complex another go!  I'm certain you'll feel much better.   Yes, supplementation is a good idea even if you're healing and gluten free.  The gluten free diet can be low in B vitamins and other nutrients. A nutritionist can help guide you to a nutrient dense diet, but food sensitivities and food preferences can limit choices.  I can't consume fish and shellfish due to the sulfa hypersensitivity and iodine content, and dairy is out as well.  I react to casein, the protein in dairy, as well as the iodine in dairy.  My Dermatitis Herpetiformis is aggravated by iodine.   Blood tests for B vitamin levels are notoriously inaccurate.  You can have deficiency symptoms before blood levels change to show a deficiency.  I had subclinical vitamin deficiencies for years which affected my health, leading to a slow downward spiral.  Because the B vitamins are water soluble, they are easily excreted in urine if not needed.  It's better to have it and not need it than need it and not have it.   Wheat and other gluten containing grain products have vitamins and minerals added to them to replace those nutrients lost in processing.  Manufacturers add cheap vitamins that our bodies don't absorb or utilize well.  Even normal people can suffer from vitamin deficiencies.  The rise in obesity can be caused by High Calorie Malnutrition, where people eat more carbohydrate calories but don't get sufficient thiamine and B vitamins to turn the calories into energy.  The calories are stored as fat in an effort to ration out diminishing thiamine  stores.    It's time to buy your own vitamins in forms like Benfotiamine that our bodies can use well.   Not sleeping well and fatigue are symptoms of Thiamine deficiency.   I'm certain Benfotiamine with a B Complex will help you immensely.  Just don't take them at night since B vitamins provide lots of energy, you can become too energetic to sleep.  Better to take them earlier in your day.   Do keep me posted on your progress!
    • NanceK
      My only proof

      By NanceK · Posted

      Oh wow! Thanks for this information! I’m going to try the Benfotiamine again and will also add a B-complex to my supplements. Presently, I just take sublingual B12 (methylcobalomin). Is supplementation for celiacs always necessary even though you remain gluten-free and you’re healing as shown on endoscopy? I also take D3, mag glycinate, and try to get calcium through diet. I am trying to bump up my energy level because I don’t sleep very well and feel fatigued quite often. I’m now hopeful that adding the Benfotiamine and B-complex will help. I really appreciate your explanation and advice! Thanks again Knitty Kitty!
    • knitty kitty
      Is this celiac?

      By knitty kitty · Posted

      @Hmart, The reason why your intestinal damage was so severe, yet your tTg IgA was so minimal can be due to cutting back on gluten (and food in general) due to worsening symptoms.  The tTg IgA antibodies are made in the intestines.  While three grams of gluten per day for several weeks are enough to cause gastrointestinal symptoms, ten grams of gluten per day for for several weeks are required to provoke sufficient antibody production so that the antibodies move out of the intestines and into the blood stream where they can be measured in blood tests.  Since you reduced your gluten consumption before testing, the antibody production went down and did not leave the intestines, hence lower than expected tTg IgA.   Still having abdominal pain and other symptoms this far out is indicative of nutritional deficiencies.  With such a severely damaged small intestine, you are not absorbing sufficient nutrients, especially Thiamine Vitamin B 1, so your body us burning stored fat and even breaking down muscle to fuel your body.   Yes, it is a very good idea to supplement with vitamins and minerals during healing.  The eight essential B vitamins are water soluble and easily lost with diarrhea.  The B vitamins all work together interconnectedly, and should be supplemented together.  Taking vitamin supplements provides your body with greater opportunity to absorb them.  Thiamine and the other B vitamins cannot be stored for long, so they must be replenished every day.  Thiamine tends to become depleted first which leads to Gastrointestinal Beriberi, a condition that doctors frequently fail to recognize.  Symptoms of Gastrointestinal Beriberi are abdominal pain and nausea, but neuropathy can also occur, as well as body and joint pain, headaches and more.  Heart rhythm disruptions including tachycardia are classic symptoms of thiamine deficiency.  Heart attack patients are routinely administered thiamine now.   Blood tests for vitamins are notoriously inaccurate.  You can have "normal" blood levels, while tissues and organs are depleted.  Such is the case with Gastrointestinal Beriberi, a thiamine deficiency in the digestive tract.  Eating a diet high in carbohydrates, like rice, starches, and sugar, can further deplete thiamine.  The more carbohydrates one eats, the more thiamine is required per calorie to turn carbs into energy.  Burning stored fats require less thiamine, so in times of thiamine shortage, the body burns fat and muscles instead.  Muscle wasting is a classic symptoms of thiamine deficiency.  A high carbohydrate diet may also promote SIBO and/or Candida infection which can also add to symptoms.  Thiamine is required to keep SIBO and Candida in check.   Thiamine works with Pyridoxine B 6, so if Thiamine is low and can't interact with Pyridoxine, the unused B 6 accumulates and shows up as high.   Look into the Autoimmune Protocol diet.  Dr. Sarah Ballantyne is a Celiac herself.  Her book "The Paleo Approach" has been most helpful to me.  Following the AIP diet made a huge improvement in my symptoms.  Between the AIP diet and correcting nutritional deficiencies, I felt much better after a long struggle with not feeling well.   Do talk to your doctor about Gastrointestinal Beriberi.  Share the article linked below. Thiamine, gastrointestinal beriberi and acetylcholine signaling https://pmc.ncbi.nlm.nih.gov/articles/PMC12014454/ Keep us posted on your progress!
    • Trish G
      Fiber Supplement

      By Trish G · Posted

      Thanks, that's a great addition that I hadn't thought of. 
    • trents
      Is this celiac?

      By trents · Posted

      Other diseases, medical conditions, medications and even (for some people) some non-gluten foods can cause villous atrophy. There is also something called refractory celiac disease but it is pretty uncommon.
×
×
  • Create New...

Important Information

NOTICE: This site places This site places cookies on your device (Cookie settings). on your device. Continued use is acceptance of our Terms of Use, and Privacy Policy.