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Test Code BUN Urea Nitrogen (BUN), Plasma or Serum

Methodology

Urease GLDH

Performing Laboratory

Munson Healthcare Laboratories

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma

Container/Tube: Green-top (heparin) gel tube

Specimen Volume: 0.5 mL of heparinized plasma
Transport Temperature: Refrigerate
Collection Instructions: Forward promptly.

Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).


Serum
Container/Tube: Gold-top serum gel tube

Specimen Volume: 0.5 mL of serum
Transport Temperature: Refrigerate
Collection Instructions: Forward promptly.

Note: 1. Indicate serum.
2. Label specimen appropriately (serum).

Reference Values

10-23 mg/dL

Critical value (automatic call-back) for patients < 2 months of age: > 30 mg/dL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

84520