BUN
Also known as: Urea nitrogen; Urea
Formal name: Blood Urea Nitrogen
At a Glance
Why Get Tested?
To evaluate kidney function or monitor the effectiveness of dialysis and other treatments related to kidney disease or damage
When to Get Tested?
As part of a routine comprehensive or basic metabolic panel or when you are acutely or chronically ill with a condition that may cause or be worsened by kidney dysfunction
Sample Required?
A blood sample drawn from a vein in the arm
Test Preparation Needed?
None





