Blood Urea Nitrogen
What is Blood Urea Nitrogen (BUN) in terms of Nursing Labs?
Blood urea nitrogen (BUN) measures the amount of urea in the blood. When protein is broken down ammonia is formed. Ammonia is converted to urea in the liver and is eventually excreted in the kidneys.
What are the Indications for Blood Urea Nitrogen?
- Liver Problems
- Renal Problems
- Hydration Status
- Tumor Lysis
- Evaluate effects of drugs on:
- Monitor effectiveness of hemodialysis
What would cause increased levels of Blood Urea Nitrogen?
- Renal Failure
- Congestive Heart Failure (CHF)
- Myocardial Infarction (MI)
- Kidney Disease
- Excessive Protein Intake
- Diabetes Mellitus (DM)
- Gastrointestinal (GI) bleed
- Urinary Tract Obstruction
What would cause decreased levels of Blood Urea Nitrogen?
- Liver Failure
- Inadequate Protein Intake
Date Published - Apr 21, 2016
Date Modified - May 23, 2019