Sign in →

Test Code XYL25G Xylose 25gm

Important Note

For use with adults or patients collecting blood and urine samples.

Outpatient testing is scheduled through Diagnostic Scheduling (794-4222)

Collection Container


Specimen Required

5 Hour Urine

Specimen Volume

20 mL

Minimum Specimen Volume

0.5 mL

Special Handling Instructions

Draw plasma 2 hours after dose.

Transport Temperature

Urine: Room temperature, Plasma: Refrigerated



CPT Code


Units of Measure

plasma: mg/dL, urine g/5hr

Special Instructions

Patient should be fasting at least 8 hours before procedure