Gluten Intolerance Test – Easy home-to-lab test – Verisana Lab

Gluten Intolerance Test

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With the Gluten Intolerance Test, your stool sample is examined to determine:

1.) Transglutaminase IgA
2.) Secretory IgA

With a gluten intolerance, bloating, diarrhea or abdominal pain often occur after eating foods containing gluten (pasta, bread, cake, etc.).

Availability: deliverable immediately
  • Details
  • Test measures
  • Symptoms
  • Sample collection guide
  • Sample report
  • Reviews
Who should take the test?

Do you usually suffer from flatulence, diarrhea or stomach pain after the consumption of gluten-containing foods such as bread, cake or noodles?

Celiac disease is the chronic disease caused by the intolerance of gluten in food. Gluten is a component of various cereals such as wheat, rye, barley, oats, spelled, kamut, greens, einkorn and emmer. Because of this intolerance the mucosa becomes damaged. As a result, various nutrients can be absorbed only partially or not at all. The rigorous lifelong renunciation of gluten-containing foods can restore and maintain the mucosal function.

The test analyzes the values of the following analytes:

  • Secretory IgA
  • Transglutaminase IgA

Our Gluten Intolerance Test helps you to find out whether you are suffering from gluten intolerance, which will allow you to eliminate your complaints by changing your diet.

How does it work?

You collect the samples at home, send them back to us and we will provide you with your level of each analyte and whether your level falls within the reference ranges for your age. In addition to that, the results include graphs showing whether your levels are in the “green” (=normal/healthy) or “red” (=too high/low) area, making it easy to understand the results.

What will my results tell me?

Your results will provide detailed information about whether your secretory IgA and Transglutaminase IgA levels are normal, low, or high compared to reference ranges in your age group. You can then discuss the results with your doctor or health practitioner, who can give you further guidance and treatment recommendations.

What guidance will I get along with my results?

We always recommend the discussion of the mailed results with your doctor or practitioner. Besides, further information is available on our website, especially in the different test categories, under “health conditions” and the FAQs. Still have questions? Then you can contact us by mail at

Test measures
For the Gluten Intolerance Test we analyse:
  • Secretory IgA
  • Transglutaminase IgA
Secretory IgA

Secretory IgA (sIgA) is an immune protein, which reacts anti-inflammatory. It coats the intestinal lining, especially the mucosal surfaces and is supposed to protect us from inside. As secretory IgA represents the first line of defense of the GI, immunological activity in the GI tract can be assessed using secretory IgA. Low levels of fecal sIgA increase the risk of leaky gut syndrome and promote the growth of microbial pathogens in the intestine. The risk of inflammatroy immune reactions to undigested food and protein is also increased if low levels of sIgA are present. Low fecal IgA levels can result from physical or mental stress and/or inadequate nutrition. High fecal sIgA indicate immune reactions to antigens from bacteria, yeast or other microbes.

Transglutaminase IgA

Tissue transglutaminase is an enzyme that fixes damage in your body. People with celiac disease often have antibodies in their body that attack this enzyme. Increased antibodies therefore indicate the possibility of a celiac disease (sprue, gluten-enteropathia). The value returns to normal by following a gluten-free diet. Based on the dietary implications of the result, the diagnosis should be confirmed by use of biopsy oder IgE Antigliadin in blood.

Symptoms the Gluten Intolerance Test is suitable for:
  • Stomach pain
  • Flatulence
  • Diarrhea
  • Nausea
  • Eczema
  • Headache
  • Fatigue
  • Concentration difficulties
Sample collection guide

Please read the following instructions in detail, before starting with the sample collection.


Please download the instructions here

Sample report
The sample report

Below you will find the sample report for the Gluten Intolerance Test.

Download sample report


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Any Questions?

Here are some of the most frequently asked questions regarding this test. Your question is missing? Please contact us at:

How do I know if I have gluten intolerance?

Symptoms of gluten intolerance may include flatulence, diarrhea, stomach pain, bloating, and fatigue after consuming gluten-containing foods such as bread, cake, or noodles.

Is gluten intolerance the same as a wheat allergy?

No, gluten intolerance and wheat allergy are distinct conditions. While both involve adverse reactions to wheat products, gluten intolerance primarily relates to difficulty digesting gluten proteins, whereas a wheat allergy involves an immune response to specific wheat proteins.

Why is the sIgA value determined in addition to the transglutaminase IgA?

The sIgA value provides information about the immune function of the intestinal mucosa. With a celiac disease, the mucosa becomes so severely damaged over time (by the consumption of gluten-containing food) that nutrients can only be partially absorbed. It is therefore advisable to always check the condition of the mucous membrane as well.

Does the gluten test show a reaction even if I eat gluten-free?

No, the test usually shows no reaction when your are on a gluten-free diet. Therefore, do not follow a diet at least 2 weeks before collecting the stool sample, but eat plenty of gluten-containing food.

Why is it so difficult to avoid gluten in food?

Many products contain hidden gluten, which is not always clearly written on the labels. It is often used in the production of thickeners or flavor enhancers. Gluten is therefore not only found in cereal products like bread, but also, for example, in many sausage products, fast food or even beer.

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