blood urea nitrogen (BUN)

Blood Urea Nitrogen (BUN) is a test that measures the amount of urea nitrogen in your blood. Urea is a waste product formed when your body breaks down protein from food. Normally, your kidneys filter urea out of your blood and eliminate it through urine. A BUN test helps assess kidney function and can indicate how well your kidneys are working. Elevated BUN levels may suggest kidney problems, dehydration, or other health issues, while low levels are less common. It’s a useful tool for monitoring kidney health and diagnosing potential problems.