To assist in the differential diagnosis of small intestine malabsorption syndromes such as celiac, tropical sprue, and Crohn’s diseases.
Plasma (1 mL) collected in a gray-top (fluoride/oxalate) tube and urine (10 mL from a 5-hr collection) in a clean amber plastic container.
|Dose by Age||Conventional Units||SI Units (Conventional Units × 0.0666)|
| 25 g||Greater than 25 mg/dL||Greater than 1.7 mmol/L|
| 5 g||Greater than 20 mg/dL||Greater than 1.3 mmol/L|
| 0.5 g/kg (max. 25 g)||Greater than 30 mg/dL||Greater than 2 mmol/L|
| 25 g||Greater than 4 g/5-hr collection||Greater than 26.6 mmol/5 hr|
| 5 g||Greater than 1.2 g/5-hr collection||Greater than 8 mmol/5 hr|
| 0.5 g/kg (max. 25 g)||Greater than 16%–40% of dose||Greater than 16%–40% of dose|
d-Xylose Tolerance Test has been found in Davis's Lab & Diagnostic Tests
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