Oxalate 24 Hour Urine

Test Name:   Oxalate 24 Hour Urine
Alternate Name (s):    
Laboratory Module:   LAB
Ordering Mnemonic:   OXA U
Specimen Type:   

24 Hour Urine

Collection Container:   Sterile 24 Hour Urine Collection Container
Container Information
24 Hour Urine Container24 Hour Urine Container
Collection Information:   The 24h urine collection can be collected in an unacidified container. The container should be kept refrigerated during the collection to help stabilize the oxalate level.
Test Schedule:  

Send-Out Monday thru Friday

Turnaround Time:   Routine

10 days

Stat / Urgent


Reference Interval:  


Critical Values:    
Lab Process Notes :   Prior to shipment the sample should be acidified in the laboratory by adding 1 drop of 6N HCL to 5mls of urine. Please confirm the pH is between 2-3. DO NOT over acidify the urine sample. Samples that are over-acidified will not be assayed.

This acidification is required since endogenous ascorbate is converted in the urine to oxalate at an alkaline pH. Additionally the reagent buffer supplied by the kit manufacture has been prepared based upon the urine having a pH of between 2-3.

Storage & Transport:  

Store refrigerated. Please submit in a 10ml conical urine container.

Test Referred to :    Laboratory Reference Center, Hamilton


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