What is the typical range for blood urea nitrogen (BUN) in adults?

The typical range for blood urea nitrogen (BUN) in adults is best represented by the value of 7 to 20 mg/dL. BUN is a common laboratory test that measures the amount of nitrogen in the blood derived from urea, which is a waste product formed from protein metabolism. This range is considered normal and helps clinicians assess renal function, hydration status, and protein intake. Values outside this range can suggest various medical conditions, with elevated levels indicating potential renal impairment or dehydration, while lower levels may suggest liver function issues or malnutrition. Understanding this normal range is crucial for nephrology nursing practice, as it allows for better monitoring and management of patients with renal conditions.