Final answer:
BUN is a measure of the concentration of urea in the blood and is used as an indicator of kidney function.
Step-by-step explanation:
BUN stands for Blood Urea Nitrogen, and it is a measure of the concentration of urea in the blood. Urea is a waste product that is produced when the body breaks down proteins. BUN is commonly used as an indicator of kidney function because the kidneys filter urea out of the blood and excrete it in the urine.
An elevated BUN level can indicate a problem with kidney function, such as dehydration, kidney disease, or urinary tract obstruction. It can also be influenced by factors like diet, medications, and certain medical conditions.
Therefore, BUN is not a measure of filtrate formed per minute, the concentration of urine, uremia, or electrolyte imbalance.
Learn more about BUN as a measure of kidney function