Specimen:
Collect
- Timed Urine in Timed Urine Container
Submit
- 4 mL (Min:1.5 mL) Aliquot(s) Timed Urine in Sterile Specimen Container. Submit Frozen. Submit in a Standard Transport Tube.
Special Handling
- 24 HR Urine Collection Only
- Critical Frozen
- Keep Specimen Refrigerated During Collection
- State Collection Time
- State Volume
- Patient Prep: Patient should avoid ingestion of vitamin C prior to collection.
Specimen Preparation: Thoroughly mix entire collection (24-hour) in one container. Transfer 4 mL aliquot from the well-mixed 24-hour urine collection to an ARUP Transport Tube with 20 mg Sulfamic Acid (ARUP supply #48098). Mix well. (Min: 1.5 mL) Record total volume and collection time interval on transport tube and test request form. This information is required for test interpretation. If the collection tube with Sulfamic Acid is not available, transport a 4 mL unadjusted aliquot of urine. Freeze specimens immediately after aliquoting. Do not exceed 4 mL in tubes.
Separate specimens must be submitted when multiple tests are ordered.
Stability
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 Month(s); Incubated: Unacceptable
Methodology
- Quantitative Spectrophotometry
Performed
Mon-Fri
Reported
2-5 Day(s)
CPT Codes
- 83945
Interpretive Data
Please see report for interpretive data.
Components
- 93016 - OXALATE, UR PER DAY
- 93018 - OXALATE, UR PER VOLUME
- 93008 - CREAT, UR PER VOLUME
- 93009 - CREAT, UR PER DAY
- 93388 - URINE VOLUME
- 93518 - HOURS COLLECTED
Last Updated: March 9, 2026 @ 9:13 am
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