Oxalate, Urine Test (3250U)

Oxalate, Urine Test (3250U)

Analysis Code 3250U 
Test Name Oxalate, Urine 
Test Includes Oxalate 
Compound Synonym(s) Oxalic Acid 
Purpose Overexposure/Poisoning Determination; This test is New York State approved. 
Category Biological Marker, Poison 
Method(s) Enzymatic Assay (EZA) 
Specimen Requirements 3 mL Urine 
Transport Temperature Refrigerated 
Specimen Container Plastic container (preservative-free) 
Special Handling Collect 24-hour urine specimen in a glass or plastic bottle containing 10 mL concentrated hydrochloric acid. Record the volume in liters.
Ascorbic acid at very high concentration (exceeding 16 mcmol/mL urine) can interfere. It is recommended that patients refrain from taking excessive amounts of vitamin C or vitamin C rich food for at least 48 hours prior to collection. 
Light Protection Required Not Required 
Stability Room Temperature: 14 day(s)
Refrigerated: 14 day(s)
Frozen (-20 °C): 3 month(s) 
*Rejection Criteria None 
Known Interference(s) Oxalate [EZA]: ascorbic acid 
Day(s) Test Set-up / TAT [EZA] Wednesday / 7 days 
Suggested CPT Code 83945 
**Minimum Volume 1.2 mL 
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You are viewing Oxalate, Urine Test (3250U)
*Rejection criteria pertain to clinical specimen submissions only.
**Stated minimum volume allows for a single analysis. Repeat analysis will not be performed.


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