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Test Code NBLD0163 Urea Nitrogen, Random, Urine


Urease with Glutamate Dehydrogenase (GLDH)/Bichromatic Rate

Useful as a renal function test. Urea nitrogen reflects ratio between urea production and clearance. Increased blood urea nitrogen may be due to increased production or decreased excretion.

Performing Laboratory

Bozeman Health Laboratory Services

Specimen Requirements

Specimen Type: Urine

Container/Tube: Clean container

Specimen Volume: 10 mL

Collection Instructions:

1. Collect a random urine collection.

2. No preservative.

Specimen Transport Temperature


Specimen Stability


Specimen Type Temperature Time
Urine Ambient 2 hours
  Refrigerated 4 days


Reference Values

No established reference values

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding