False positive D-xylose test may be seen in

Answer is D (All of the above) Blind loop syndrome and Antibiotic therapy may cause false positive D-xylose test due to bacterial overgrowth Pyloric stenosis may cause false positive results due to delayed gastric emptying and persistant vomiting. Ascitis is an established cause for false positive D- xylose test due to large collection of fluid in third space.