What is the typical range for Blood Urea Nitrogen (BUN) levels?

The typical range for Blood Urea Nitrogen (BUN) levels in a healthy adult is generally recognized as being between 5 to 25 mg/dl. BUN is a measure of the amount of nitrogen in the blood that comes from urea, a waste product formed in the liver after the body breaks down protein. Monitoring BUN levels is important in assessing kidney function, as the kidneys are responsible for filtering urea from the blood.

When levels are too low or too high, it can indicate issues such as inadequate protein intake, liver disease, or impaired kidney function. A reference range of 5-25 mg/dl reflects the normal functioning of the metabolic processes in the body and is clinically relevant for assessing patients in various healthcare settings, particularly in renal care. The other ranges provided do not accurately match the established norms and are thus less relevant in this context.