D-xylose Absorption Test

Reasons you may not be able to have the test or why the results may not be helpful include:

• Large amounts of bacteria in the intestines.
• Kidney disease or bladder problems that prevent you from completely emptying your bladder.
• Medicines, such as antibiotics, aspirin, and heart medicines. Many medicines can affect D-xylose test results.
• Physical activity during the test. You will be instructed to rest quietly until the test is complete.
• Conditions that cause food to remain in the stomach for a long time.