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Test Code OXCR Oxalate : Creatinine Ratio, urine

Additional Codes

Epic Ordering Code LAB3041690
NBS code LBC00758
Service code 31973

Specimen Requirements

Submit only one of the following immediately: 

Preferred:
Plain Sterile Container

 

Processing Requirements

Collect mid-stream urine in preservative-free urine container. Unacidified Urine.

Specimen Type: Random urine specimen without preservatives

Volume: 10 mL

Storage/transport requirements: Refrigerated

Specimen Stability

Specimen Type Urine
Ambient Send the sample to the laboratory immediately
Refrigerate 6 days (preferred)
Frozen 1 month

Specimen Condition

Haemolysis Not applicable
Icterus Not applicable
Lipaemia Not applicable
Others Not applicable

 

 

 

 

 

Methodology

Spectrophotometry

Days and Times Performed

Friday, TAT 2 - 8 days

Reference Interval

Age  mmol/mmol
1 – < 6 mths  0.07 – 0.22
6 mths – < 1 yr 0.06 – 0.17
1 – < 2 yrs   0.05 – 0.13 
2 – < 3 yrs  0.04 – 0.10
3 – < 5 yrs  0.03 – 0.08
5 – < 7 yrs  0.03 – 0.07
7 – < 10 yrs  0.02 – 0.06
10 – < 14 yrs   0.02 – 0.06 
14 – 17 yrs   0.02 – 0.06 

 

 

 

 

 

 

 

 

 

 

 

Testing Laboratory

National University Hospital
Clinical Chemistry, 67724399

Useful For

Investigation of renal calculi

LOINC Code Information

Oxalate : Creatinine ratio 34350-9
Oxalate, urine 15086-2
Creatinine, urine 14683-7

Panel Information

Panel includes the following tests:

Update

Last updated 15/05/2026