| Laboratory: | Clinical Biochemistry (METABOLIC) |
| Test Name: |
OXALATE – Random (Oxalate/Creatinine Ratio) - (U)
Test Code:
OXU
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| Clinical Information: |
Test Indications: OXALATE/CREATININE RATIO
Monitoring therapy for kidney stones using 24-hour urine collections. Identifying increased urinary oxalate as a risk factor for stone formation. Diagnosis of primary or secondary hyperoxaluria. Patient Preparation Instructions: For children, height (cm) and weight (kg) must be recorded on requisition. For 24 hours before patient should not take large doses (>2 g orally/24 hours) of vitamin C. Ingestion of ascorbic acid may falsely elevate the measured urinary oxalate excretion Collection protocol: • Collect first-morning urine |
| Collection Devices: |
Preferred Device:
1 - Urine Collection Container, Random 100 mL
Urine Collection Container, Random 100 mL Manufacturer: Starplex Scientific Inc. (Etobicoke, ON) Catalogue #: 3008-1 |
| Specimen Required: |
Urine: 10.0 mL
Pediatric Urine: 5.0 mL
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| Referral: | |
| Requisition: | |
| Reference Values: |
AGE GROUPS Reference Ranges (Oxalate µmol/mmol creatinine)
0 - 1 mo: 500 2 - 6 mo: 500 7 - 12 mo: 375 13 mo - 6 y: 190 7 - 10 y: 125 > 10 y: 100
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| Availability: |
Within 2 Weeks
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| See Also: | |
| More Information: |
Health Sciences Centre by Shared Health Biochemical Genetics Laboratory by spectrophotometery.
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