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

Specimen Requirements

 

Submit only 1 of the following specimens:

 

Plasma
Draw blood in a green top tube (plasma) or light green gel seperator tube (plasma). Spin down and send 0.5 mL of plasma refrigerated.
Note:  

  • Indicate plasma on the request form.
  • Label specimen appropriately (plasma).

 

Serum
Draw blood in a plain, red top tube or a gold top tube. Spin down and send 0.5 mL of serum refrigerated.
Note:  

  • Indicate serum on request form.
  • Label specimen appropiately (serum).

Specimen Stability

ROOM TEMP REFRIG 2-8 DEGREES CELSIUS FREEZE -20 DEGREES CELSIUS
7 DAYS 7 DAYS 12 MONTHS

 

Performing Laboratory

Conway Regional Laboratory Services

Reference Values

0-5 years:  5-27 mg/dL
≥5-15 years:  7-22 mg/dL
≥15 years:  8-19 mg/dL
Critical value (automatic call-back):  >100 mg/dL

Methodology

Urease with GLDH

Day(s) Test Set Up

Monday through Sunday

Available STAT

CPT Code

84520