OverviewThe 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.
Update Date 3/14/2014
Updated by: Chad Haldeman-Englert, MD, FACMG, Wake Forest School of Medicine, Department of Pediatrics, Section on Medical Genetics, Winston-Salem, NC. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.