A
5200 Harry Hines Blvd.
,
Dallas
,
TX
75235
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General Information
Alias: BUN
Performed: 24 hrs.
Turn Around Time: Med Emerg: 60 minutes; Routine: 4 hrs.
CPT Codes: 84520
Performed By: Chemistry
Notes: This test is performed by both the Rapid Response and Logistics Chemistry Labs.
Clinical Utility: The determination of serum BUN currently is the most widely used screening test for the evaluation of kidney function. The test is frequently requested along with the serum creatinine test since simultaneous determination of these two compounds appears to aid in the differential diagnosis of prerenal, renal and postrenal hyperuremia.
Components
| Name |
Method |
Sex |
Age Range |
Ref. Range Low |
Ref. Range High |
Units |
| BUN |
|
|
0 - 1 Year |
4 |
19 |
mg/dL |
| BUN |
|
|
1 - 18 Years |
5 |
18 |
mg/dL |
| BUN |
|
|
18 Years - Unspecified |
6 |
23 |
mg/dL |
Specimen Requirements
| Type |
Container |
Volume |
Units |
Collection / Delivery |
Storage / Transport |
Off Campus |
| Blood |
Grn LiH w/Gel, 4.5mL-IP,ED,OPC; Red w/Gel, 5mL - COPC,WHC |
|
|
|
Deliver at room temperature to the lab within 2 hours. |
Specimens should be spun and aliquots prepared when needed. Store in appropriate temperature conditions and deliver to Logistics Laboratory. |