Information on ordering breath tests

We now offer online ordering of specific breath tests within Europe due to repeated requests for reliable testing. The validated tests for food intolerances can now be performed at home or anywhere convenient. The test kit consists of instructions, glass tubes for breath samples, and the desired test sugar. The test kit will arrive by post or courier and the completed test is returned to us using the same packaging.

Read first

Please read the following links before choosing your tests:

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These tests should not be performed in children under the age of 6 years or in patients with hereditary fructose intolerance, HFI. See chapter on hereditary fructose intolerance, HFI, on this page.


The cost of the tests is CHF 111.- (Swiss francs) per test within Europe, except for the test for bactieral overgrowth (SIBO: glucose), which is 126.- CHF. The cost of outward shipping is 9.- CHF. Return shipping is arranged and paid for by the buyer.


Shipment from Food Intolerance Diagnostics will be effected in the week of your order and we will confirm the shipment date by email. Please be aware that we cannot influence customs processing times, which can be quite long, depending on the country. The test must be returned to us in the original container within 3 weeks to ensure adequate protection of the tubes.

Test results

The results of the tests with recommendations will be emailed to you by unencrypted email to the address you have provided us within a week of the receipt of your test materials. The results will include a professional analysis of the breath test results. This process does not replace appropriate healthcare consultation or individual advice by your doctor. In case of positive food intolerance test results expert dietary advice is recommended.

How to order

Choose your country for shipment below. Then choose your test(s) by clicking on the “add to cart” button below. This will add the test to your shopping cart. You will be redirected to the Paypal website, where you can pay with you credit card or your Paypal account.


Please be aware that several other diseases may cause similar symptoms or signs to those provoked by food intolerances and we recommend you consult your doctor about your symptoms for exclusion of diseases other than food intolerances. Breath testing for gastrointestinal symptoms will not exclude inflammatory or cancer or any other diseases. Food intolerance may be caused by underlying diseases, such as celiac disease or inflammatory bowel disease, again emphasizing the need for you to consult with your doctor about your symptoms. During the breath testing you will be swallowing sugars that may provoke symptoms. This is obviously part of the test procedure and result. However, this is another reason why we recommend you perform the diagnostic process under the guidance of your doctor. Food Intolerance Diagnostics emphasize that the use of this service is entirely at your own risk, and in no event shall Food Intolerance Diagnostics or its owners be liable for any direct, indirect, incidental, consequential, special, exemplary, punitive, or any other monetary or other damages, fees, fines, penalties, or liabilities arising out of or relating in any way to this service or test, or sites accessed through this service, and/or content or information or testing material provided herein. Your sole and exclusive remedy for dissatisfaction with the service is to stop using the service. Electronic communication is not appropriate for healthcare consultation or individual advice. Accordingly, if you are experiencing a medical treatment, you should not rely on this web site for assistance, but should instead seek appropriate medical assistance.


Wilder-Smith CH, Materna A, Wermelinger C, Schuler J. Fructose and lactose intolerance and malabsorption testing: the relationship with symptoms in functional gastrointestinal disorders. Aliment Pharmacol Ther 2013;37:1074-1083

Wilder-Smith CH, Olesen SS, Materna A, Drewes,A.. Predictors of response to a low-FODMAP diet in patients with functional gastrointestinal disorders and lactose or fructose intolerance. Aliment Pharmacol Ther 2017; 45: 1094-1106.

Wilder-Smith CH, Olesen SS, Materna A, Drewes AM. Repeatability and effect of blinding of fructose breath tests in patients with functional gastrointestinal disorders. .Neurogastroenterol Motil. 2019 Feb;31(2):e13497. doi: 10.1111/nmo.13497. Epub 2018 Nov 4.

Wilder-Smith CH, Drewes AM, Materna A, Olesen SS. Extragastrointestinal Symptoms and Sensory Responses During Breath Tests Distinguish Patients With Functional Gastrointestinal Disorders.. Clin Transl Gastroenterol. 2020 Aug;11(8):e00192. doi: 10.14309/ctg.0000000000000192.PMID: 32955198