D-xylose Absorption Test

Xylose Tolerance Test

How To Prepare

For 24 hours before a D-xylose test, do not eat foods high in pentose, a sugar similar to D-xylose; these foods include fruits, jams, jellies, and pastries.

Medicines such as ASA and indomethacin can interfere with the results of a D-xylose test. For this reason, your health professional may instruct you to temporarily stop these medicines before the test.

Do not eat or drink anything except water for 8 to 12 hours before having this test. Children younger than 9 years old should not eat or drink anything except water for 4 hours before the test.

Talk to your doctor about any concerns you have regarding the need for the test, its risks, how it will be done, or what the results will mean. To help you understand the importance of this test, fill out the medical test information form(What is a PDF document?).

Go to previous section	Go to top of page	Go to next section
Author:	Ralph Poore	Last Updated: June 20, 2007
Medical Review:	Anne C. Poinier, MD - Internal Medicine Peter J. Kahrilas, MD - Gastroenterology Anne C. Poinier, MD - Internal Medicine
© 1995-2008 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.