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D-Xylose Absorption, serum
| Item | Value | |||||||
|---|---|---|---|---|---|---|---|---|
| Approval req'd? | No | |||||||
| Available Stat? | No | |||||||
| Test code | XYL1 | |||||||
| Test group | D-Xylose | |||||||
| Performed by | Quest | |||||||
| Sendout? | Yes | |||||||
| Method | Colorimetry | |||||||
| Patient Preparation | Adults must have fasted for 8 hours prior to sample collection. Children must fast for 4 hours before sample collection. Outpatients should be given a prescription for the proper dose of (D+)-xylose powder to be obtained at an outside pharmacy. |
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| Collection Instructions | Note the dose on the requisition and in the patient's chart. Dose: 1.0 g/kg-maximum 25 g. Draw sample 1 hour after D-xylose administration. | |||||||
| Container type | Gray top | |||||||
| Amount to Collect | 4 mL blood | |||||||
| Sample type | Blood | |||||||
| Preferred volume | 4 mL blood | |||||||
| Min. Volume | 1 mL blood | |||||||
| Processing notes | Mix the sample well and refrigerate it-do not freeze. Enter the xylose dose in the computer at the time of accession. Order Quest # 6924. |
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| Units | mg/dL | |||||||
| Normal range |
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| Synonyms | xylose | |||||||
| Turn around times | Blood test set up as needed; urine test performed Monday-Friday. Turnaround time: 1-4 days. | |||||||
| CPT coding | 84620-90 | |||||||
| LOINC code | 30575-5 | |||||||
| Last Updated | 2/14/2013 10:21:15 AM | |||||||
| Entry Number | 1015 |
If you have additional questions regarding this test, please call: 415-353-1667