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Blood Urea Nitrogen (BUN)

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

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At a Glance

Why Get Tested?

To evaluate the health of your kidneys; to help diagnose kidney disease; 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; when you have signs and symptoms that may be due to kidney disease or you have a condition that may cause or be worsened by kidney dysfunction; at regular intervals when you are being treated for kidney disease or damage

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?