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

The normal blood urea nitrogen (BUN) level typically ranges from 8 to 23 mg/dL. This range reflects the urea nitrogen concentration in the blood, which is an important indicator of kidney function and the body's protein metabolism. BUN is formed from the breakdown of proteins and is usually excreted by the kidneys. When interpreting BUN levels, it is essential to consider that various factors, including hydration status, protein intake, and overall kidney health, can influence these values.

A BUN level within the range of 8 to 23 mg/dL suggests normal kidney function and metabolic processes. Levels above this range may indicate issues such as kidney dysfunction or dehydration, while levels below this range could suggest overhydration or liver problems, among other factors. Understanding normal BUN levels is crucial for critical care paramedics to effectively assess and monitor patient conditions.