The typical range for blood urea nitrogen levels is 7 to 22 mg/dL. As a result, maintaining normal blood urea nitrogen levels is critical. When the liver or kidneys are damaged, the BUN levels rise. Under normal circumstances, the kidneys filter urea nitrogen, which is then excreted in the urine. The waste product of breakdown of proteins in the liver is urea nitrogen. It determines the amount of urea nitrogen in the blood. Each laboratory which analyzes these values could have somewhat different ranges, but it’s not something We want you to worry about right now.Ī blood urea nitrogen (BUN) test is used to detect how well your kidneys are working. The ammonia is subsequently changed to urea in the liver, which then travels through the bloodstream to the kidneys, in which it is expelled as a waste product in urine.Īs a result, blood tests can be used to assess the BUN level, or the blood urea nitrogen, in our body, which is a key sign of liver and, more importantly, kidney health.īUN levels in the blood is varies from 8 to 18 milligrammes per deciliter. BUN (Blood Urea Nitrogen)Ī chemical called ammonia is produced if proteins are digested by our body. BUN levels can be raised by conditions like heart failure, shock, a high-protein diet, and gastrointestinal bleeding. As the glomerular filtration rate (GFR) declines owing to sick or injured kidneys, BUN builds up in the blood. The liver produces urea, which is then transported by that of the blood to kidneys for elimination. This is one of the oldest heart failure prognostic indicators. The serum consequence of protein metabolism is blood urea nitrogen (BUN).
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