PT - JOURNAL ARTICLE AU - Martin J. Kendall TI - The influence of age on the xylose absorption test AID - 10.1136/gut.11.6.498 DP - 1970 Jun 01 TA - Gut PG - 498--501 VI - 11 IP - 6 4099 - http://gut.bmj.com/content/11/6/498.short 4100 - http://gut.bmj.com/content/11/6/498.full SO - Gut1970 Jun 01; 11 AB - Xylose absorption tests were performed on patients unselected except to exclude gastrointestinal or renal disease. The proportion of xylose excreted decreases with increasing age. Intravenous xylose tests suggest that this is due to a deterioration in renal function rather than to a reduction in intestinal absorption.