The sucrose intolerance test is a non-invasive diagnostic test that analyzes the intestine's ability to absorb this sugar, which is naturally present in fruits, vegetables, and numerous processed products.
The test involves administering a sucrose solution and collecting exhaled air samples at regular intervals for approximately 3 and a half hours.
When the intestine does not properly absorb sucrose due to a deficiency of the sucrase-isomaltase enzyme, it reaches the colon undigested, where it is fermented by bacteria, producing gases such as hydrogen or methane. These gases enter the bloodstream and are eliminated through the lungs, allowing them to be detected in the breath.
This analysis helps diagnose primary or secondary sucrose intolerance, facilitating a more effective dietary and clinical approach.