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Test Code URUN/LAB748 Urea Nitrogen - Random Urine

Performing Laboratory

Asante Rogue Regional Medical Center / Asante Three Rivers Medical Center

Specimen Requirements

Required volume 10 ml urine

Sterile Collection Cup


Specimen can be collected at any time

Specimen Transport Temperature and Stability

Send to laboratory refrigerated.  It is recommended that urine samples be analyzed within 2 hours of collection.

Reasons for Rejection

Lack of Two Patient Identifiers:

         1-Patient's First & Last name 

         2-Patient's Date of Birth

Day(s) Test Set Up

Routine - same day

ASAP - 2 hours after receipt of specimen in lab

STAT - 1 hour after receipt of specimen in lab

Additional Information

Urine urea nitrogen is increased in hyperthyroidism, post-operatively and with increased dietary protein.  It is
decreased in normal growing children and infants, pregnancy, low protein, high carbohydrate diets, renal damage and insufficiency from any cause.


Coupled Urease 

Performing Department


Test Classification and CPT Coding

84540  -  Urea nitrogen, urine

Billing Code