Abstract
THE purpose of this paper is to report values for the so-called xylose tolerance test in a group of healthy infants and children at different ages. We have chosen to designate this test the oral D-xylose test, for reasons discussed below.Xylose is absorbed chiefly in the duodenum and proximal jejunum, and since it is a simple sugar, digestion is unnecessary and absorption is independent of bile, intestinal or pancreatic secretions. The primary use of this test, therefore, is in the demonstration of malabsorption states arising from lesions involving the upper small-bowel wall, such as gluteninduced enteropathy. This procedure, first . . .
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