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What is the definition or description of: blood urea nitrogen?

4 doctors weighed in across 2 answers

Metabolic waste : It's level helps evaluate renal function elevation can mean poor renal function or GI bleeding.

Answered 4/23/2018

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Dr. Mathew Sorensen answered

Specializes in Urology

BUN: Blood urea nitrogen is a blood test that is used to evaluate kidney function and hydration status. The urea nitrogen comes as a normal biproduct of protein metabolism in the liver. With decreased kidney function and dehydration, BUN will increase.

Answered 6/10/2014

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