Test Code OXALTU Oxalate, Total Urine

Important Note

Evaluate individuals with calcium oxalate renal calculi.

Additional Codes

20482

Methodology

Quantitative Spectrophotometry

Specimen Type

24-hour urine

Preferred Collection Container

24 hour urine container with no preservative

Collection Volume

4mL aliquot of well mixed unpreseved 24 hour urine collection

Minimum Collection Volume

1.5 mL

Collection Instructions

Refrigerate during collection. 24 hour specimen should be transported to laboratory immediately to be measured and aliquoted. 4mL aliquot of well mixed 24 hour collection should be frozen immediately

Transport

Frozen

Rejection Criteria

Critical frozen

Specimen Storage and Stability

After collection complete: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month

Turn Around Time

2-5 days

Test Alias

Hyperoxaluria

CPT Coding

83945

EPIC Code

LAB421

Acceptable Collection Container

24 hour urine container, no preservative`

Testing Volume