Item Value
Test name D-Xylose Absorption, urine
Available Stat? No
Turn around times Urine test performed Monday-Friday. Turnaround time: 1-4 days.
Performed by Quest
Normal range
≥ 18 year old > 4.0 g excreted in 5 hours after a 25 g dose
≥ 18 year old > 1.2 g after a 5g dose
Child 16-33% of the ingested dose
Container type 24 hour urine collection container

Click here for Urine Preservative Requirements
Amount to Collect Entire urine output over 5 hour period
Collection Instructions Refrigerate container during collection.
Sample type 5-hour urine

If you have additional questions regarding this test, please call: 415-353-1667