BLOOD UREA NITROGEN (BUN), SERUM

Additional Codes

Software	Test Code
Label Text	BUN
EPIC	LAB140

Performing Laboratory

NorDx Laboratories

Useful For

A screening test for evaluating kidney function

Method Name

Photometric

Reference Values

< 1 year: 4 - 19 mg/dL

1 - 17 years: 5 - 18 mg/dL

18 - 60 years: 6 - 20 mg/dL

> 60 years: 8 - 23 mg/dL

Days and Times Test Performed

Monday through Sunday

Report Available

1 Day

Available Stat

Specimen Type

Submit one of the following:

~ Plasma

~ Serum

Preferred Container

Plasma Separator Tube (PST)

Serum Separator Tube (SST)

Preferred Volume

Plasma: 1 mL (Plasma Separator Tube (PST))

Serum: 1 mL (Serum Separator Tube (SST))

Minimum Volume

Plasma: 0.3 mL (Plasma Separator Tube (PST))

Serum: 0.3 mL (Serum Separator Tube (SST))

Specimen Collection and Handling

Spin specimen, separate from clot and send refrigerated.

Specimen Stability Information

Specimen Type: Plasma

Refrigerated: 7 Days

Must be spun/separated within: 2 Hours

Specimen Type: Serum

Refrigerated: 7 Days

Must be spun/separated within: 2 Hours

Add On Capable

Yes

Advance Beneficiary Notice Requirements

No ABN Required

CPT Code Information

CPT Code	CPT Description	CPT Disclaimer
84520	Urea Nitrogen, Quantitative

Keywords

BUN (BLOOD UREA NITROGEN)

UREA NITROGEN

Performing Laboratory Location