Oxalate, Urine (OXALTE UR)
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| Synonyms:
| Urine Oxalate |
| Specimen: | Urine; 24 hour urine collection in a 24 hour container with 30 mL 6N HCl preservative. Patient should be instructed how to collect a 24 hour urine.
Patient Preparation: Avoid vitamin C suppplements and vitamin C rich foods (eg, citrus fruits like oranges, orange juice; vegetables like broccoli, tomatoes, peppers, potatoes) for 48 hours prior to collection.
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| Volume: | 100 mL aliquot |
| Minimum Volume: | 2.5 mL aliquot |
| Collection: | State patient's age, sex, and total 24-hour urine volume on the request form and specimen.
Submit at least 100 mL urine aliquot.
Oxalate in acidified urine is stable following collection at room temperature or refrigerated at 2-8°C up to 7 days. |
| Rejection Criteria: | pH not less than 3; improper labeling. |
| Reference Range: | See report |
| Methodology: | Enzymatic |
| Test Use: | Patients who form calcium oxalate kidney stones appear to absorb and excrete a higher portion of dietary oxalate in urine than do normals. Hyperoxaluria is not uncommon in subjects with malabsorption. Twenty-four hour urine collections for oxalate are ind |
| Additional Information: | Patient should avoid viatmein C 24 hours pior to collection. |
| Testing Includes: | Sent to LabCorp. LabCorp test # 003970. |
| Testing Facility: | LabCorp |