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d-Xylose Absorption Test, Blood, 2 Hour
Test Code7553
CPT Codes
84620
Preferred Specimen
4 mL whole blood collected in a sodium fluoride (gray-top) tube
Patient Preparation
For fasting test, patient should fast overnight before blood collection
Minimum Volume
1 mL
Instructions
NOTE: This test cannot be performed at a Patient Service Center because of the preparation step required for the d-Xylose solution.
4 mL blood, drawn 2 hours post oral ingestion of d-Xylose. Label sample vial with patient's name and the time of collection postdose (e.g. 2 hour, etc.).
4 mL blood, drawn 2 hours post oral ingestion of d-Xylose. Label sample vial with patient's name and the time of collection postdose (e.g. 2 hour, etc.).
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
Methodology
Colorimetry (C)
Setup Schedule
Sets up 2 days a week.