It is a highly sensitive, its accuracy is almost 100%, it is equally effective for children and adults, and in the West have long been considered the "gold standard" for the diagnosis of H. pylori infection. Typically, the test is carried out in the morning on an empty stomach. Before starting the test, the patient drinks a glass of juice, such as orange or grapefruit. Then exhales into two test tubes - before receiving the drug is harmless and odorless, and 30 minutes after taking.
Essence respiratory test Helicobacter pylori using carbamide (urea) is as follows: custom enzyme urease secreted by bacteria decomposes urea into ammonia and carbon dioxide. If a patient is infected with a bacterium that urea decomposes in the stomach and release carbon dioxide rapidly enters the bloodstream and is then excreted from the body through the lungs. When receiving urea labeled with a stable isotope of carbon in the exhaled carbon dioxide can register a change in the isotopic composition.
To get accurate results, you must:
Do not take bismuth preparations, antibiotics or anti-secretory drugs in the last 30 days before the test;
Do not take proton pump inhibitors (omeprazole, pantoprazole, etc.) in the last 14 days before the test;
Do not break the diet (the patient should refrain from eating for 6 hours before the test).
And more - during the test must sit quietly. Physical activity will distort the result.