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.
blood: 25 to 40 mg/dl 2 hours after ingestion
urine: 80 to 95% excreted within 5 hours of ingestion
Note: mg/dl = milligrams per deciliter
What abnormal results mean:
Lower than normal values may be seen in:
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