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Oxalate, 24 hr Urine Temporarily unavailable

Test ID: OXAL

Test

Method

Enzymatic Colourimetric

Report Includes

Creatinine; Oxalate

Specimens

Urine (24 hr)

Test Location

Mount Sinai Hospital, 600 University Avenue, Toronto ON M5G 1X5

Test Version

28-Sep-2023

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

28-Sep-2023

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
  • Male: 8.8 - 22.0
  • Female: 4.5 - 16.0
Oxalate µmol/d
  • Children 0 - 16 y: 161 - 483
  • Adult Male: 92 - 564
  • Adult Female: 46 - 368
mg/d x 11.4

Test Location

Mount Sinai Hospital, 600 University Avenue, Toronto ON M5G 1X5

Test Version

28-Sep-2023

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

28-Sep-2023