BLOOD UREA/BUN Detail

The Blood Urea Nitrogen (BUN) / Blood Urea test is a commonly performed blood test that evaluates kidney function by measuring the level of urea nitrogen in the bloodstream. Urea is a waste product formed in the liver when the body breaks down proteins. It is filtered out by the kidneys and excreted in urine.

Elevated BUN levels may indicate impaired kidney function, dehydration, heart failure, or a high-protein diet, while lower levels can be seen in liver disease or malnutrition. This test is often ordered as part of a basic metabolic panel or renal function panel to monitor kidney health and guide diagnosis or treatment decisions.