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Test Code UUN Urea Nitrogen, 24 Hour, Urine

Methodology

Conductivity

Performing Laboratory

Huntsville Hospital Laboratory

Specimen Requirements

Submit an entire 24-hour urine collection in a urine container. No preservative. Refrigerate specimen during collection, and send specimen refrigerated.
Note:  1. Starting and ending times of collection are required on request form for processing.
2. Follow instructions in “Urine Collection—Huntsville Hospital Health System Laboratory” in “Special Instructions.”

Reference Values

12-20 g/24 hours

Day(s) Test Set Up

Monday through Sunday

CPT Coding

81050 - urine timed measurement
84540 - urea nitrogen

Secondary ID

HHA1436

LOINC Coding

Test Name LOINC Code

Urea Nitrogen, 24 Hour, Urine

3096-5
Total Volume 3167-4
Urine Urea Nitrogen, Random 3095-7

 

Specimen Stability Information

 

Specimen Type

Temperature

Time

Urine, 24 hr collection

RT

2 days

  Refrigerated 7 days

 

Reject Due To

 

Hemolysis

NA

Lipemia

NA

Icterus

NA