Preparing for the hydrogen breath test (WTO)

The patient must fast for 12 hours before the test.
You may drink a glass of mineral water (still, without added sugar or flavourings).
For several days before the test (up to and including the day of the test), refrain from taking medicines such as vitamins, aspirin, antibiotics and laxatives.
On the day before the test, the patient should avoid gas-producing vegetables such as cabbage, onion, leek, beans and pickled vegetables. Do not drink milk or fruit juices. The last meal on the day before the test should be light and low in dietary fibre.
Do not smoke cigarettes or chew gum from the evening before the test or on the day of the test.
Patients with dentures should not use denture adhesive on the day of the test
The patient must not eat during the test. The patient drinks only a solution of a specific type of sugar at set intervals.
The test takes 90 to 150 minutes, depending on the type of test.