Fructose Intolerance

Fructose test in London

  • Testing for intolerance to natural sugars
  • Understand diet-related symptoms
  • Caring & professional service with fast results
Pricing £290
Type of sample taken Breath testing
Turnaround time 7 days
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Based on 164 reviews
Fructose is the sugar found in fruit & added to many processed foods. We are one of the only clinics in London who test for fructose intolerance.

Fructose is a sugar that is found naturally, such as in fresh fruit, some vegetables & grains, & honey, as well as in processed foods containing refined sugars such as high fructose corn syrup.

If you have fructose intolerance, the small intestine is unable to absorb all of the fructose you consume. When it arrives in the colon undigested, it causes the production of gases which can lead to bloating, cramping, & diarrhoea.

We offer hydrogen breath testing for fructose intolerance, which measures your body’s response to fructose.

Our test checks for intolerance to:

  • apple
  • apricot
  • blackberry
  • grape
  • grapefruit
  • melon
  • orange
  • peach
  • pear
  • pineapple
  • plum
  • raspberry
  • strawberry

Call our clinic or use our online booking to arrange your food intolerance test.

When should I get tested?

You do not need to have a recommendation from a doctor in order to have this test, although your doctor may recommend it if you are experiencing unexplained symptoms of fructose intolerance, to help with either confirming or ruling out a diagnosis.

What the test includes

The test for fructose intolerance is a breath test.


Step 1

Preparing for test

No special preparation is required.
Step 2

During the test

You will be given a small quantity of fructose, & then your breath will be tested at intervals to check your hydrogen levels.
Step 3


If your test was suggested by one of our doctors, you will receive a phone call from the doctor to explain your results. You can also take the results to your own doctor for analysis, or book a consultation with us.