What is the purpose of the D-xylose test?

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The D-xylose test is used to distinguish the site for fat malabsorption by testing the ability of the patient to absorb a simple sugar called D-xylose. It is not used for testing blood glucose or diagnosis of celiac disease. The D-xylose test is used to distinguish the site for fat malabsorption. It helps to differentiate between malabsorption due to pancreatic insufficiency (where the test results will be abnormal) and malabsorption due to other causes (where the test results will be normal). It does not test for abnormalities in blood glucose or diagnose celiac disease.

What Is the Purpose of the D-Xylose Test