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Male urinary system D-xylose level tests

Overview Risks Results

D-xylose absorption

Alternative Names: Xylose tolerance test Normal Values: The value varies depending on the amount of D-xylose administered. Usually the test is registered as either positive or negative. Positive indicates that D-xylose is found in the blood and/or urine and is therefore being absorbed by the intestines. Text Continues Below blood: greater than 25 mg/dl (milligrams per deciliter) at 2 hours after ingestion urine: greater than 16% of ingested dose excreted within 5 hours of ingestion What abnormal results mean: Lower than normal values may be seen in: Crohn's disease Giardia lamblia infestation hookworm infestation lymphatic obstruction radiation enteropathy small intestinal bacterial overgrowth celiac disease (sprue) viral gastroenteritis Whipple's disease

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