Medicine Urinary D-Xylose test is used for the the study of: A Proximal small bowel mucosal function B Distal small bowel mucosal function C Proximal small bowel serosal function D Distal small bowel serosal function 💡 Explanation Urinary D-Xylose test is used for the the study of: ✓ Correct Answer: A. Proximal small bowel mucosal function