The Breath Test is a diagnostic test performed by analysing samples of exhaled air. The lactose breath test is useful for diagnosing lactose intolerance.
THE LACTOSE BREATH TEST TAKES APPROXIMATELY 90 MINUTES
*To obtain reliable results, it is important to follow these instructions.
15 DAYS BEFORE THE TEST
Do not take antibiotics, as they may alter the levels of gases in the exhaled air.
7 DAYS BEFORE THE TEST
Stop taking the following medications at least 7 days before the test:
- Prokinetics: metoclopramide, levosulpiride, clebopride, domperidone, prucalopride
- Laxatives: macrogol, lactulose, magnesium compounds, bisacodyl, senna, sodium picosulfate, mineral oils, linaclotide
Please note: Medication should only be discontinued if clinically appropriate. Do not stop any medication if your doctor has advised you to continue treatment to avoid significant consequences. Never stop taking medication on your own initiative; always consult your doctor before making any changes to your treatment. If you are taking other medications not listed above (e.g. antihypertensive drugs), you may continue taking them as usual.
THE DAY BEFORE THE TEST
It is recommended to avoid fermentable foods, which may increase intestinal gas production. In particular, it is advisable to limit the intake of fibre and complex carbohydrates found in bread and pasta (especially wholegrain varieties) and their derivatives, potatoes and other tubers, legumes (beans, chickpeas, lentils), and starchy vegetables (e.g. corn, peas). It is also advisable to avoid dairy products and milk derivatives (cream, béchamel sauce, custards, butter, etc.) and cheeses made from animal milk (cow, goat or sheep); alcoholic or carbonated beverages, sweets and chewing gum.
The following foods are allowed: low-fat yogurt, all soy-based foods, almond milk, rice milk, walnuts, almonds, avocado; light vegetables such as spinach, broccoli, courgettes, lettuce, rocket, cucumber, cherry tomatoes and olives; grilled chicken, eggs, baked salmon, strawberries, kiwi, olive oil and vinegar.
THE DAY OF THE TEST
The patient must have been fasting for at least 12 hours (only plain water is permitted).
Smoking is prohibited on the day of the test, as smoking may affect the results.
Brush your teeth thoroughly with a toothbrush and toothpaste. Initially rinse your mouth with a 0.05% chlorhexidine-based mouthwash diluted in water, followed by a second rinse with plain water. Avoid using alcohol-containing mouthwashes, as they may interfere with the accuracy of the test.
It is recommended to avoid physical exertion or strenuous exercise during the test, as hyperventilation may interfere with gas measurements.
Please note: If the preparation instructions have not been followed carefully, the healthcare staff reserve the right to decide whether or not to proceed with the test.