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Test Code RURAU Urea, Random, Urine


Specimen Required


Container/Tube: Plastic, 5-mL tube (T465)

Specimen Volume: 4 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.


Useful For

Assessment of renal failure (prerenal vs acute kidney injury)

Method Name

Kinetic Ultraviolet Assay

Reporting Name

Urea, Random, U

Specimen Type

Urine

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days

Reject Due To

Hemolysis

NA

Lipemia

NA

Icterus

NA

Other

NA

Reference Values

No established reference values

Day(s) and Time(s) Performed

Monday through Sunday; Continuously  

Analytic Time

Same day/1 day

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

84540

LOINC Code Information

Test ID Test Order Name Order LOINC Value
RURAU Urea, Random, U In Process

 

Result ID Test Result Name Result LOINC Value
URCON Urea, Random, U 3092-4
CREA5 Creatinine Concentration 2161-8
RATO4 Urea/Creatinine Ratio 40487-1