What is the normal BUN (blood urea nitrogen) level?

The normal range for blood urea nitrogen (BUN) levels is typically between 8 to 25 mg/dL. BUN is a medical test that measures the amount of nitrogen in your blood that comes from the waste product urea. Urea is produced in the liver and is a byproduct of protein metabolism.

A BUN level within the range of 8 to 25 mg/dL indicates that the kidneys are functioning properly and effectively filtering waste from the bloodstream. If the BUN levels fall below this range, it may indicate a less efficient metabolic state or liver dysfunction, whereas levels above this range could suggest dehydration, kidney disease, or other conditions affecting kidney performance.

Understanding this normal range is crucial for diagnosing and managing various medical conditions. Maintaining awareness of this standard can inform clinicians about a patient’s hydration status and kidney function, which is vital in many healthcare settings.