D - Xylose Absorption (D-XYLOSE)
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| Synonyms:
| None listed |
| Specimen: | Blood; (1) Gray (sodium flouride) top vacutainer tube.
Patient must be fasting.
After collection of first sample, patients are administered an oral liquid dose of D-Xylose.
A 5 hour timed urine is collected beginning at the time of ingestion.
Obtain one, two, three, four, and five hour samples postdose. |
| Volume: | Urine -10 mL and Blood - full primary tube |
| Minimum Volume: | |
| Collection: | Outpatients are scheduled through First Call (864)512-2252.
Maintain urine at room temperature and refrigerate blood at 2-8°C. |
| Rejection Criteria: | Patient vomits; plasma not refrigerated; stool in urine; improper labeling. |
| Reference Range: | See report |
| Methodology: | Spectrophotometry |
| Test Use: | Malabsorption syndromes |
| Additional Information: | Fasting and 1-hour post dose blood specimen collected on children. Fasting and 2-hour blood specimen collected on adults. A 5-hour timed urine collection is done on both. Adults received 25 g dose of D-Xylose; children receive a weight based dosage. C |
| Testing Includes: | Blood and Urine D-Xylose levels. |
| Testing Facility: | AnMed Laboratory |