Sign in →

Test Code UUN Urea Nitrogen, 24 Hour, Urine

Performing Laboratory

Huntsville Hospital Laboratory

Methodology

Conductivity

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.”

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

 

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