Fructose Intolerance Test

(8 customer reviews)

£ 79,00

GetTested’s Fructose Intolerance Test shows your ability to break down fructose (a sugar) which is found in fruits, vegetables, and honey, among other things. Common symptoms of fructose intolerance are bloating and gas, nausea, stomach cramps and loose stools. The test measures not only congenital fructose intolerance but so-called fructose malabsorption, i.e. the ability to break down fructose regardless of whether it is genetic or not.

☑️ Test done at home
☑️ Analysed at an ISO 15189 certified lab
☑️ Comprehensive report incl. recommendations

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About fructose intolerance

Fructose is a form of carbohydrate that is found in ordinary granulated sugar (sucrose). When fructose cannot be broken down / absorbed through the intestinal wall, it attracts water which in turn can cause intestinal and stomach problems. Fructose intolerance, also called fructosemia, means that you have fructose in the blood that the body has difficulty breaking down due to a lack of degrading enzyme. In most cases, it is a hereditary disease caused by a change in the gene for the enzyme aldolase B (ALDOB). It varies a lot how you are affected and what symptoms you get. Some suffer completely without symptoms while others experience stronger pain.

About the Fructose Intolerance Test

This test measures the ability to break down fructose, that is, fructose malabsorption. This means that it is suitable for anyone who suspects a possible problem with breaking down fructose in the body, regardless of the reason. Unlike many other tests that only test for the genetic ability to break down fructose, this test shows your ability to break down fructose for whatever reason.

Symptoms of fructose intolerance

The symptoms of fructose intolerance vary, but signs to be aware of are gas, cramps and pain in the stomach and diarrhea. Children who become acutely ill after fructose intake experience shortness of breath due to lowered pH in the blood. If you suffer from fructose intolerance and at the same time burden the body for a long time with fructose, you risk damage to the liver and kidneys. You should also be observant of other symptoms such as tremors, epileptic seizures and abnormal sweating. Many people with fructose intolerance experience the first symptoms of the disease only after they have had an infection, such as stomach illness, or after a course of antibiotics, although the reduced uptake of fructose in these people has probably been there since childhood.

Some people who suffer from fructose intolerance also have lactose intolerance, so it may be worth trying both.

Cause of fructose intolerance

Fructose is a simple and energy-rich sugar, a so-called monosaccharide that consists of only one sugar molecule. Sucrose is what we commonly call sugar (granulated sugar or brown sugar), which is a disaccharide and consists of two sugar molecules, a fructose molecule and a glucose molecule. In order for fructose to be absorbed in the intestine, it must be converted by a special enzyme called fructose-1,6-bisphosphate dola. In the case of fructose intolerance, there is a deficiency of this enzyme, which normally breaks down fructose, which leads to fructose accumulating in the body instead. This can have a detrimental effect on the liver, kidneys and small intestine.

Fructose intolerance is a hereditary deficiency in the breakdown of fructose in the body and they are usually sorted into two groups.

Essential fructosuria
Essential fructosuria is a mild form of fructose intolerance that does not require treatment other than caution in the intake of fructose.

Congenital fructose intolerance
If you suffer from fructose intolerance from birth, you have a severe deficiency of the enzyme fructose-1,6-bisphosphataldola from the time you are born. If left untreated, the condition can be life-threatening for some.

Treatment of fructose intolerance

Decreased fructose uptake is a very common condition. The modern western diet contains a lot of fructose and the incidence of fructose intolerance has therefore probably increased. The condition occurs in both healthy people and people with IBS (Irritable Bowel Syndrome). Fructose is a natural sugar that is used as a sweetener in a variety of foods, including baby foods. Most baby foods are based on lactose (milk sugar) but for example soy products contain sucrose which is broken down into glucose and fructose during digestion. People with fructose intolerance have difficulty breaking down foods containing different types of sugar; in fruits, granulated sugar (sucrose) and sorbitol (sugar alcohol found in eg juices and soft drinks).

People with fructose intolerance can live normal lives if their diet is adjusted at an early stage. Early diagnosis is therefore important and if the condition is not treated, it can lead to serious illness linked to the liver and kidneys.

How does the Fructose Intolerance Test work?

The fructose intolerance test is a breath test that you collect on five occasions over a three-hour period. During your sampling, you should avoid eating food or drink that contains any fructose, as it may affect your test results. It is best to fast completely at least 8 hours before and during the test so as not to risk taking anything that could give a false result on the test. Your sample is then sent to our lab for analysis and you will receive your result digitally as soon as the lab has analysed your sample.

Additional information

Weight 0,049 kg


You take the test yourself at home through a breathing test. Your sample will be collected in a couple of hours. Your sample is then sent to our lab for analysis and you will receive your answer digitally as soon as the lab has analysed your sample.

Remember to avoid eating or drinking anything that contains the substance you are testing, that is, if you are testing lactose, you should avoid lactose intake and if you are testing fructose, you should avoid consuming fructose.

  1. Make a purchase on the website and pay with card (Visa, AMEX or Mastercard). Easy and safe.
  2. A test kit is sent to the address you enter when ordering. After your order, we will send home a test kit with instructions. It also comes with a stamped envelope that is mailed to us. It is recommended to send in your sample on a Monday or Tuesday.
  3. Carry out the test according to the instructions included in your test kit and on the web. Our Support can also answer all possible questions, before and after submissions and results.
  4. Send the test kit to our ISO certified lab and wait for results digitally. You will normally receive an answer within 15 working days after our lab has received your sample.

For more detailed instructions, see here under the category “Breath test“.

8 reviews for Fructose Intolerance Test

  1. Peregrine

    For years, I had been living with unexplained digestive distress that significantly impacted my quality of life. Despite various medical consultations and numerous dietary alterations, I couldn’t find a solution. Then, I found GetTested’s Fructose Intolerance Test. The process of ordering the test was straightforward, and the kit was promptly delivered to my doorstep. The instructions provided were easy to follow, and I was able to conduct the test at home with minimal hassle. Upon receiving my results, I discovered that fructose was the primary cause of my digestive problems. With this newfound knowledge, I was able to modify my diet and, to my relief, my symptoms started to subside. Today, I enjoy a wider variety of food without any of the previous discomforts. I am sincerely grateful to GetTested for this life-changing service. I can’t recommend it highly enough for anyone dealing with similar issues.

  2. Ellen Rutherford

    I used to have bouts of unexplained fatigue and dizziness which seriously disrupted my daily routine. Doctors’ visits didn’t provide any clear answers. That’s when I stumbled upon the Fructose Intolerance Test. It was easy to use and surprisingly quick in delivering results. The test showed that I have a fructose intolerance. Since altering my diet, my energy levels have improved tremendously and I feel like I’ve regained control over my life. It’s such a relief to finally have some answers. 🙂 🙂 🙂

  3. George Harrison

    Took this Fructose Intolerance Test, results came back negative. Well, I’m still bloated but at least I can keep my apple-a-day routine! The quest for answers continues, but fructose, you’re off the hook!

  4. Sebastian

    painless process, insightful results. recommended 🙂

  5. Phil Dennison

    Easy-to-use test with speedy results. Found out I had fructose intolerance, which explains my constant fatigue. Now I feel more energetic than ever.

  6. Janelle

    nice and not too hard!!

  7. Rhea

    I had been on a journey for the longest time, trying to figure out why certain foods didn’t sit well with me. Even though I maintained a balanced diet, every now and then, I’d feel an unexpected discomfort. Then I stumbled upon GetTested’s Fructose Intolerance Test. The entire process, right from ordering to taking the test, was so seamless. The kit arrived with clear instructions, ensuring I didn’t face any confusion. What impressed me the most was the comprehensive report I received after sending in my samples. The detailed breakdown not only highlighted my intolerance levels but also gave me insights into how fructose was affecting my system. Thanks to the test, I now have a clearer understanding of my body’s specific needs. Over the past few weeks, after making necessary dietary adjustments based on the results, I’ve experienced a significant improvement in my well-being. No more unexpected discomforts or second-guessing what I should avoid. I genuinely appreciate the depth and clarity of the information provided, and I wholeheartedly recommend this test to anyone wanting to get a clearer picture of their fructose tolerance. 🙂

  8. Beatrice

    Food mysteries can be frustrating. For the longest time, I couldn’t pinpoint why I felt bloated after eating specific fruits or sweeteners. The Fructose Intolerance Test was an eye-opener. After a seamless testing process, my results confirmed my suspicions. I appreciate how GetTested lays out the results clearly and comprehensively. Now, I’m more informed and make better dietary choices.

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