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Lactose, gluten and fructose intolerance may have a genetic basis. Find out if this is your case with our nutrigenetic test. Below we explain what it consists of and what genes we analyze.


Gluten intolerance (celiac disease)

Gluten is a protein found in some grains such as wheat, barley and rye. For people suffering from gluten intolerance, consumption of this protein can cause damage to the lining of the small intestine along with other symptoms such as abdominal pain, diarrhea, fatigue and anemia.



Celiac disease is the most severe form of gluten intolerance, an autoimmune disease with a strong genetic predisposition.

The most commonly associated haplotypes are HLA-DQ2 and HLA-DQ8, genes that are involved in the presentation of proteins to the immune system. In addition, we analyze other genetic markers that have been associated with gluten intolerance, such as ICOS, BACH2, or TAGAP. Genetic analysis is useful to make the diagnosis of gluten intolerance along with other complementary medical tests, especially in people who have no symptoms or whose diagnosis is uncertain. It is important to know that these genetic variants are necessary, but not sufficient, for the development of gluten intolerance, so these markers are more useful to rule it out than to diagnose it. If these markers associated with celiac disease are not detected, celiac disease can be discard it with more than 95% reliability.

Lactose intolerance

Lactose is a type of sugar found in milk and dairy products. People with lactose intolerance have difficulty digesting lactose due to a lack of an enzyme called lactase, which is responsible for breaking down this sugar so that it can be absorbed.



This can cause symptoms such as abdominal pain, gas, bloating and diarrhea after consuming this food group.

Lactase deficiency has been linked to a particular gene that controls the production of lactase in the body, the MCM6. By analyzing different markers of this gene, we can examine your genetic predisposition to be lactose intolerant based on lactase production:

  • High (possibly not intolerant)
  • Medium (possibly not intolerant, although with lower lactase production)
  • Low (possibly intolerant)

Fructose intolerance

Fructose is a type of sugar found in many fruits and also in some processed foods such as soft drinks, syrups and prepared foods.



Some people may have difficulty digesting fructose due to a condition called fructose intolerance. This can cause symptoms such as abdominal pain, bloating and diarrhea after consuming foods containing fructose.

There is a hereditary fructose intolerance, which is caused by different alterations in the ALDOB gene. This gene produces a key enzyme for breaking down fructose in the liver. So by analyzing the variants of this gene we can rule out or confirm hereditary fructose intolerance. Hereditary fructose intolerance should not be confused with fructose malabsorption, which may be possible and can be diagnosed through the exhaled hydrogen test.

We explain what genetic intolerance tests consist of

In this video we talk about how genetic testing for gluten, lactose and fructose intolerance is performed and what it is used for.

The most complete nutrigenetic test

In addition to knowing your genetic predisposition to the food intolerances mentioned above, in ADNTRO you will have access to a complete nutrition section where you can learn more about how your body metabolizes different nutrients, how it responds to different diets, or how it tends to gain weight.

Genetic diet

We analyze the effectiveness of different types of diets, such as low carbohydrate or high protein according to your genetics.


How fast your metabolism is and how your body responds when you ingest different macronutrients.

food intolerances and allergies

Your genetic predisposition to suffer from gluten, lactose and fructose intolerance, as well as various food allergies.

vitamins and minerals

How your genes control the way you transport, convert, absorb, excrete and store micronutrients.

cholesterol and triglycerides

Your LDL and HDL cholesterol and triglyceride levels according to your genetics.


What is your hunger sensation and your predisposition to obesity.

It also includes...

Not only nutrition, but many other areas, such as origins, sports, health...
At ADNTRO we want everyone to have access to their genetic information in an innovative, fun and reliable way. Your genes have a lot to say and will help you discover new things about yourself or reinforce the things you already know. These are the different sections that you can find with our premium kit.

Origins and


and injuries

Personality and addictions

and chronotype

Health and

saliva sample

It all starts with a saliva sample

It's very simple! You can do it from home in less than 5 minutes.

What they say  about us

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"The test that fully exploits the virtues of knowing our genetic code. It is the most complete and reliable test on the market"

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“…Innovative potential concentrated in the field of genetics”

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"ADNTRO seeks to promote the commercialization of its genetic detection kit"

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"Creators of a solution that allows us to decipher our genetic code at home."

Need a second opinion?

Cary sheremet
Cary sheremet
ADNTRO's very recent ancestry results…
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ADNTRO's very recent ancestry results update are really outstanding, in my opinion ... READ MORE
Rúl Sanz
Rúl Sanz
The results are excellent
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The results are excellent, but what has surprised me the most are the personality traits. Impressive!
Ladi Oczelják
Ladi Oczelják
Amazing experience
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Nice web, very good service and amazing adn information wow
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Impressed with this new company! They have been extremely helpful with all inquiries and respond very quickly to all questions. They continue to improve their site layout to make it more user friendly ...
Highly recommended
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A fantastic, fast service. Stunning results; very accurate over so many aspects of my own personality and health. Excellent, easily understood but thorough report.
Valentin Rivas
Valentin Rivas
Connecting the dots on yourself. 100% recommend
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Impressed by the accuracy of several factors and excited to learn more about myself. Great design and solid science. Looking forward to further updates and new research! Keep the great work.

Nutrigenetic consultation

Get the most out of your results with a personalized nutrition session* that will help you integrate your genetics with your diet and lifestyle. You will be able to book it after receiving your results on the ADNTRO platform.

*Additional cost

Frequently Asked Questions Nutrigenetics

No, a genetic test for food intolerance cannot be used as a definitive diagnosis of a food intolerance. It is a complementary test to other medical tests that must be interpreted together to diagnose an intolerance.

No. Since this is a DNA test, it is not necessary to remove problematic foods in advance before taking the sample. Simply follow the directions that come with the kit.

No. We perform the most complete DNA test with only a saliva sample. You will receive the kit at your home where you can comfortably collect your saliva according to the instructions provided. Afterwards, you will have to send the sample to the indicated address. We expect you to receive your results within 15 working days after receiving it in our laboratory.

The kit includes all the material needed to ship to Denmark, where the laboratory is located. The DNA is extracted from your sample and then genotyped using a technology called microarrays. We use the Illumina "GSA array" chip, which is a collection of microscopic DNA dots attached to a solid surface.

At all times we speak of genetic predisposition, that is, the increase or decrease in the probability that a condition, disease, or behavior will appear according to genetics, among other traits. For example, it may be that your genetic predisposition indicates that you tend to have lower than average levels of vitamin B9 or HDL cholesterol, but in a recent blood test you have high levels. This is because the environment and diet also influence these parameters and must be taken into account when making personalized recommendations for each moment. That is why we recommend counseling with our dietitian-nutritionist to get the most out of your results.

No. Being a DNA test, it is not necessary to repeat it since your DNA does not change. However, what can change is the interpretation of the results as science advances. For this reason in DNATRO we keep your genetic information updated, you will even be able to see the trend of your results as the information is updated with new studies.

Privacy is absolute. Our sole purpose is to help you understand your genetics and personalize your well-being. Below, you will find a summary of the most relevant information regarding privacy. However, when activating the sample, we recommend that you read the legal informed consent in its entirety:

  • We do not sell your data to anyone, your genetic data belongs only to you and we store it privately on servers in the EU.
  • The only link between you and your sample will be an email requested upon activation, which is associated with the sample code so that you can access your results.
  • The DNA sample is destroyed after analysis in the laboratory.
  • We use aggregated data from all samples together with public databases such as 1000G to improve the accuracy of your results. At no time do we share your data with other users unless you expressly request us to do so. Remember, if you have any additional questions, we are here to accompany you on your genetic journey with a fresh approach.

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