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Laboratory Test Directory

Oxalate, Urine (Updated)

Components

Name Method Department Units
Oxalates, Urine Quantitative Spectrophotometry
Send Out mg/dL

Specimen Requirements

Urine, 24 hours

Container Type Container Size Specimen Volume
Preferred

24 hour urine container

N/A 4 mL
Stability

Frozen - 1 month(s)

Specimen Preparation

  • Refrigerate during collection
  • Transfer an aliquot of urine from a well-mixed collection to an ARUP 20 mg Sulfamic Acid Transport Tube
  • If the collection tube with Sulfamic Acid is not available, transport a 4 mL unadjusted aliquot of urine
  • Record total volume and collection time interval on transport tube and on test request form
  • Freeze specimens immediately after aliquoting

Urine - Random

Container Type Container Size Specimen Volume
Alternate

Sterile container

N/A 4 mL
Stability

Frozen - 1 month(s)

Specimen Preparation

  • Transfer an aliquot of urine from a well-mixed collection to an ARUP 20 mg Sulfamic Acid Transport Tube
  • If the collection tube with Sulfamic Acid is not available, transport a 4 mL unadjusted aliquot of urine
  • Record total volume and collection time interval on transport tube and on test request form
  • Freeze specimens immediately after aliquoting

Reasons for Rejection

  • Not submitted in proper transport media
  • Use of urine preservative other than described.
  • Room temperature receipt
  • Refrigerated specimen

Comments

Patient should avoid ingestion of Vitamin C prior to collection. At beginning of collection have patient void and discard this urine. Begin timing collection at this point and collect all urine until the end of the collection period. Have patient void and save urine at the final collection period. Random samples also acceptable, but it will be run with a disclaimer. Reference ranges do not apply to the random urine. If the random urine is submitted we must sign the packing list and approve that it is permitted to be run with the disclaimer. Thoroughly mix entire collection (24-hour or random) 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) 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.

CPT Code

  • 83945