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D-xylose level tests

D-xylose level tests

Overview

The D-xylose tolerance tests measure the intestines' ability to absorb D-xylose, a simple sugar, as an indicator of whether nutrients are being properly absorbed.

Review Date 3/31/2024

Updated by: Jenifer K. Lehrer, MD, Department of Gastroenterology, Aria - Jefferson Health Torresdale, Jefferson Digestive Diseases Network, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.