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Also known as: Urea Nitrogen; Urea
Formal name: Blood Urea Nitrogen

At a Glance

Why Get Tested?

To evaluate kidney function; to 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 your arm

Test Preparation Needed?