Protein breakdown is also increased by cortisol hormone, thereby elevating BUN levels. BUN is elevated when activation of sympathetic arginine-vasopressin and angiotensin-aldosterone systems is inappropriately increased. BUN levels are increased as blood volume is decreased. Low consumption of water or dehydration.Interval training or inflammation, which leads to breakdown of proteins from muscles.Infection or fever, which increases the breakdown of proteins – a common feature of any illness.Levels in adults over age 60 are greater than levels in young adults.Īfter discussing the normal BUN levels, let’s discuss the factors which raise and decrease the BUN levels. BUN levels in toddlers are around 66% of the levels found in an average healthy adult. Generally, blood urea nitrogen levels increase with increasing age. A result greater than 50 mg/dL indicates an underlying medical problem.īUN levels also change with gender and age and during pregnancy. The range of normal levels of blood urea nitrogen is between 7 and 22 mg/dL. Hence, normal blood urea nitrogen levels are of essential importance. BUN levels are raised when any damage is caused to liver or kidneys. Under normal conditions, urea nitrogen is filtered by the kidneys, which is then removed from the body in urine. Urea nitrogen is a byproduct (waste product) of protein breakdown in the liver. It measures the levels of blood urea nitrogen. A BUN (blood urea nitrogen) test is utilized to determine the functioning of your kidneys.
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