D-Xylose, 1 hour

Last Modified: 3/10/2021 8:49:19 AM

Medical Necessity Documentation:  
Client Notes: Please contact PHL Client Response at 266-1500 to schedule an appointment
Patient Preparation:

Overnight Fasting

Specimen Requirements: 4.0 mL Whole Blood in a  Grey Top Tube - Na Flouride
Collection Instructions: Draw patient 1 hour after oral ingestion of d-Xylose
Label sample vial with patient's name and the time of collection postdose (e.g., 1 hour, etc.).
Minimum Volume: 1.0 mL
Transport & Storage: Temperature/Stability: 7 days Ambient
7 days Refrigerated
30 days Frozen

Transport Ambient
Reference Range: < 6 years: > 14.9 mg/dL
> 6 years: > 19.9 mg/dL
Critical Ranges:  
Test Comments:  
Methodology: Colorimetric
Clinical Significance: Xylose Absorption Test is useful in screening for carbohydrate malabsorption.
Documentation: There are only a few mild adverse reactions reported with this test. They include nausea, cramping and diarrhea for a few hours.
Custom Panel: No


Turn Around Time: 3 to 6 days
Days Performed: Monday, Thursday
Sites Performed: Quest - Chantilly
PHL Test Code: XYLOS
EPIC Test Code: LAB2515
Send Out Test Code: 1199x (14733)
Alternate Test Names: d-Xylose Absorption Test, Blood, 1 Hour; Xylose Absorption
Included Tests:  
CPT Coding: 84620

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