Diagnosis and Treatment Archive
Abnormal BUN
 
What is a BUN test?

BUN or Blood Urea Nitrogen is a blood test that evaluates kidney function by measuring the amount of urea nitrogen in the blood. Click the following links to learn more about BUN:

BUN Overview

This link has a great overview of what a BUN test measures. You can access more information on the BUN test by clicking the Next>> link at the bottom of the page.

BUN Test Overview

This link offers a complete look at the BUN tests, including why the test is performed and how it is done.

 

What does it mean to have an abnormal BUN?

Click here for information on normal BUN levels and what abnormal levels may indicate.

Related tests:

 

Possible causes:

Science Links

Kidneys and Urinary Tract

This link includes a great, interactive diagram to help you learn about the anatomy of the kidneys.