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Test Code RUR Urine Uric Acid, Random 

Important Note

If ordering a timed collection use order code URUR

Specimen and Container/Tube

Specimen Type: Urine, Random Collection

Preferred Specimen: Sterile Plastic Container

Other Acceptable specimens: Sterile Clean Glass Container

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: 

  • Collect specimen per standard collection procedure and send to laboratory immediately. 
  • No preservatives or additives.

 

UCMC Offsite and UC MedLab Outreach Instructions: 

  • Samples should be centrifuged within 2 hours of collection
  • No preservatives or additives
  • Centrifuge specimens at >2500 x g for 10 minutes at room temperature.
  • Aliquot urine into plastic tube containing a minimum of 0.2 mL of specimen.
  • Urine samples must then be sent refrigerated at 2-8oC.

Rejection Criteria

  • Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits. 
  • Specimens that are collected with preservatives or additives.

Reference Values

Test

Age

Sex

Reference Range

Urine Uric Acid

All

All

N/A

Critical Values

Not applicable 

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory. 

STAT Turnaround Time: 1 hour

Routine Turnaround Time: 4 hours

Testing Schedule: 24/7

CPT Codes

84560

LOINC Codes

3086-6

Volume

Preferred Volume: 0.5 mL

Minimum Volume: 0.2 mL

Specimen Stability

Storage Temperature

Stability

Room temperature

Perform testing as soon as possible

4 days (after NaOH preservation) 

Refrigerated

Perform testing as soon as possible

Frozen

not acceptable 

Collection Instructions

  • Collect specimen per standard laboratory collection procedures. 
  • No preservatives or additives.

Test Components

Urine Uric Acid

Clinical Indications

Useful in the assessment and management of patients with kidney stones, particularly uric acid stones.

Methodology

Enzymatic Colorimetric Assay, Spectrophotometric (Roche Diagnostics)

Synonyms/Keyword Search

Not applicable 

Additional Information

  • Results should always be assessed in conjunction with patient's medical history, clinical examination and other findings.
  • Reference ranges for random urine specimens have not been established; subject to ordering physician interpretation only.

Last Review Date

4/3/2025