Creatinine; Oxalate
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Oxalate, 24 hr Urine
Test ID: OXAL
Test
Method
Enzymatic Colourimetric
Report Includes
Specimens
Urine (24 hr)
Test Location
Mount Sinai Hospital, 600 University Avenue, Toronto ON M5G 1X5
Test Version
1-Dec-2022
Specimen
Specimens
Urine (24 hr)
Sample Volume
5 mL
Patient Preparation
Restrict Vitamin C-rich foods and Vitamin C supplements (<2g/24 hr) for 48 hours prior to and during collection period.
Collection & Handling
Collection Instructions
Collect 24 hour specimen with 20 mL of 6N (6 mol/L) HCl or acidify aliquot within 24 hr of collection to final pH of 1 - 3.
Additional Information
Provide collection date and volume (in litres). A separate specimen is required if citrate is ordered as well.
Stability
| Refrigerated | 7 days |
|---|---|
| Frozen | 7 days |
Test Version
1-Dec-2022
Performance / Interpretation
Method
Enzymatic Colourimetric
Turnaround Time
5 days
Results
| Name | Units | Reference Range | Conversion Factor |
|---|---|---|---|
| Hours of Collection | h | ||
| Collected Urine Volume | L | ||
| Daily Volume | L/d | ||
| Creatinine | mmol/d |
|
|
| Oxalate | µmol/d |
|
mg/d x 11.4 |
Test Location
Mount Sinai Hospital, 600 University Avenue, Toronto ON M5G 1X5
Test Version
1-Dec-2022
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| OXAL | 20798Hours of Collection | h |
| 62649Collected urine volume | L | |
| 20799Volume Daily Ur | L/d | |
| 20801Creat Output Ur | mmol/d | |
| 20804Oxalate Daily Urine | umol/d |
Test Version
1-Dec-2022