4/29/2024 0 Comments Blood test bun normal rangeWhere 60 represents MW of urea and 14*2 MW of urea nitrogen. Elsewhere, the concentration of urea is reported in SI units as mmol/L.ī U N m g / d L United States, Mexico, Italy, Austria, and Germany). OTC deficiency is also accompanied by hyperammonemia and high orotic acid levels.īUN is usually reported in mg/dL in some countries (e.g. Reference ranges for blood tests, comparing urea (yellow at right) to other blood constituentsĪnother rare cause of a decreased BUN is ornithine transcarbamylase deficiency, which is a genetic disorder inherited in an X-linked recessive pattern. The main causes of a decrease in BUN are malnutrition (low-protein diet), severe liver disease, anabolic state, and syndrome of inappropriate antidiuretic hormone. Hypothyroidism can cause both decreased GFR and hypovolemia, but BUN-to-creatinine ratio has been found to be lowered in hypothyroidism and raised in hyperthyroidism. The main causes of an increase in BUN are: high-protein diet, decrease in glomerular filtration rate (GFR) (suggestive of kidney failure), decrease in blood volume ( hypovolemia), congestive heart failure, gastrointestinal hemorrhage, fever, rapid cell destruction from infections, athletic activity, excessive muscle breakdown, and increased catabolism. The normal range is 2.1–7.1 mmol/ L or 6–20 mg/ dL. Interpretation īUN is an indication of kidney health. It is not considered as reliable as creatinine or BUN-to-creatinine ratio blood studies. The test is used to detect kidney problems. Your results report will highlight what’s considered a normal range so that you can compare your numbers to what’s typical. Generally, a normal RDW ranges from 12 to 15, but this number may vary depending on the lab that performs the test. Individual laboratories may have different reference ranges, as they may use different assays. A normal result means that your red blood cells are similar in size. Normal human adult blood should contain 7 to 18 mg/dL (0.388 to 1 mmol/L) of urea nitrogen. The liver produces urea in the urea cycle as a waste product of the digestion of protein. Abnormal BUN levels show that something is wrong with your kidneys.6299-2, 59570-2, 12961-9, 12963-5, 12962-7īlood urea nitrogen ( BUN) is a medical test that measures the amount of urea nitrogen found in blood. Healthy kidneys should remove the BUN and leave only a small amount in the blood. Your liver breaks down the proteins you eat and produces urea nitrogen, which is released into your blood. Useful InformationĪ blood urea nitrogen test, or BUN test, shows how well your kidneys are functioning. Depending on the severity of the kidney damage, treatment may include medications, dialysis, and diet changes. High BUN levels on their own can't confirm a disease or medical condition, so your doctor may perform other tests to determine whether you have kidney damage. Treatment for high BUN levels involves treating the underlying cause. Although these causes aren't as common as kidney damage, they can all cause dangerous side effects and should be taken seriously. High BUN levels can also be caused by dehydration, stress, burn injuries, or gastrointestinal bleeding. Kidney damage can lead to a variety of symptoms, including weakness, shortness of breath, confusion, and fatigue. High BUN levels are usually caused by a problem with your kidneys. Lower your Blood urea nitrogen (BUN) by 2 mg/dL to be within normal range.
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