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Test Code U Oxal Random Oxalate, Random, Urine

Clinical System Name

Urine Oxalate, Random


None specified

Sample Requirements

Specimen: Urine - random

Container(s): Sterile Screw-Capped Container

Preferred Vol: 10.0 mL

Minimum Vol: 2.0 mL


Note: A timed 24-hour urine collection is the preferred specimen for measuring and interpreting this urinary analyte. Random collections normalized to urinary creatinine may be of some clinical use in patients who cannot collect a 24-hour specimen, typically small children. Therefore, this random test is offered for children <16 years old. Avoid taking large doses (>2 g orally/24 hours) of vitamin C prior to specimen collection. Ingestion of ascorbic acid (>2 g/day) may falsely elevate the measured urinary oxalate excretion.

Collect in a clean, plastic urine collection container.

Processing Instructions

Reject due to:

Spin: N


Temp: 2 - 4 C

Storage location: Transfer 10 mL of a well-mixed random collection urine to a plastic screw top container affixed with a large computer label. Place sample in refrigerated send outs rack.


Off-site collection: Refrigerate sample.


Specimen Type Temperature Time


Room temp 6 d
  Refrigerated 7 d
  Frozen 4 m



STAT Performed TAT
N Collected daily;performed 3x/w at Quest 5 - 7 d


Performing Laboratory

Quest Diagnostics



Quest Diagnostics

33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

Phone Number: (800) 553-5445



Reference Range


Male 3-30
Female 3-40



Method: None Spectrophotometry

Analytical Volume: None specified


CPT Codes




Send Out Instructions


Reference Test Name: Oxalic Acid, Random Urine
Reference Test Number: 10456X
Instructions: Send out M - F with the Quest courier.