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Test Code URUR (timed), RUR (random) Uric Acid, Urine

Specimen Type

Urine, timed (24 hour) or random collection

Container

Urine,random or timed 24 hour

Preferred Volume

4 mL

Offsite Collection Instructions

  • Collect without additives.  Sample may be random or timed collection. Do not refrigerate.
  • Indicate start date/time and end date/time of 24 hour collection.
  • For timed specimens, send 10 mL of a well mixed sample. Indicate start and end time and total volume.
  • If collection duration is not specified, specimen will be considered a random sample.

UCMC Collection Instructions

Collect without additives.  Sample may be random or timed collection. 
If collection duration is not specified, specimen will be considered a random sample.

Availability

Random specimen: Sunday through Saturday 24/7; Timed specimen: Monday through Friday, 7:00 a.m. to 3:00 p.m.

Turnaround Time

Random specimen: 4 hours; Timed specimen: 24 – 72 hours

STAT Availability

Not Available

Test Usage

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

CPT Code

URUR: 84560

RUR: 84560

Test Includes

quantitative determination of uric acid in urine

Reference Range

timed: 250 – 750 mg/24 hour
 

random: Reference ranges for random urine specimens have not been established; subject to ordering physician interpretation only.

Critical Results

None

Test Limitations

High homogentisic acid concentrations in urine samples lead to false results.

Minimum Volume

2 mL

Fee Code

URUR: 43446

RUR: 43446