Test are found to be abnormal or if someone has an underlying disease that is known to affect the kidneys, such as diabetes or high blood pressure.
Blood urea nitrogen to creatinine ratio (BUN:creatinine). A BUN test may be done with a blood creatinine test. The level of creatinine in your blood also tells how well your kidneys are working-a high creatinine level may mean your kidneys are not working properly. A blood urea nitrogen (BUN) test is done to: 1  See if your kidneys are working normally. 2  See if your kidney disease is getting worse. 3  See if treatment of your kidney disease is working. 4  Check for severe dehydration. Low BUN levels are not common and are not usually a cause for concern. They may be seen in severe liver disease, malnutrition, and sometimes when a patient is overhydrated (too much fluid volume), but the BUN test is not usually used to diagnose or monitor these conditions. BLOOD UREA NITROGEN (BUN) This waste product from protein metabolism is formed in the liver and excreted by the kidneys. High BUN values could mean that the kidneys are not working as well as they should. Rating Newest Oldest. Best Answer: BUN stands for Blood Urea Nitrogen. It is a measure of kidney function. The blood urea nitrogen (BUN) test is a test of how well your kidneys are working. It measures the amount of nitrogen in your blood. The nitrogen is present in a chemical called urea.  If your physician orders a BUN test for you, he or she will also likely order a creatinine test. Both tests can indicate how well your kidneys are working. The typical ratio of BUN to creatinine in your blood is 10:1 to 20:1, according to the American Association for Clinical Chemistry. When your liver filters proteins, it gives off urea nitrogen as a waste product. The kidneys are responsible for filtering the urea nitrogen out of your blood supply and into your urine. If a BUN test reveals higher-than-normal levels, your kidneys may not be working properly or as effectively as they should. Blood creatinine and BUN tests may also be ordered to evaluate kidney function prior to some procedures, such as a CT (computed tomography) scan, that may require the use of drugs that can damage the kidneys. The remaining waste forms urine. If the creatinine and BUN tests are found to be abnormal or if someone has an underlying disease that is known to affect the kidneys, such as diabetes or high blood pressure, then creatinine and BUN tests may be used to monitor for kidney dysfunction and the effectiveness of treatment. · just now. Report Abuse. BUN or Blood urea nitrate is a test a doctor orders with a CMP or BMP this along with your serum creatinine is used to check your Kidney function a low BUN or creatinine is Good, it means your kidneys are working well. If you BUN is over 25 or your Creatinine is over 1.5 your kidneys maybe compromised. BLOOD UREA NITROGEN (BUN) This waste product from protein metabolism is formed in the liver and excreted by the kidneys. High BUN values could mean that the kidneys are not working as well as they should. Urea is a waste product formed in the liver when protein is metabolized. Urea is released by the liver into the blood and is carried to the kidneys, where it is filtered out of the blood and released into the urine. The remaining waste forms urine. If the creatinine and BUN tests are found to be abnormal or if someone has an underlying disease that is known to affect the kidneys, such as diabetes or high blood pressure, then creatinine and BUN tests may be used to monitor for kidney dysfunction and the effectiveness of treatment. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider. The normal BUN level is between 7 and 21 milligrams per deciliter (mg/dL). A blood urea nitrogen (BUN) test measures the amount of urea nitrogen found in your blood. BUN levels help your doctor see how well your kidneys are working. The test may be used along with other measurements to help diagnose a kidney disorder or find out how well your treatment for kidney disease is working. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider. The normal BUN level is between 7 and 21 milligrams per deciliter (mg/dL).
http://www.webmd.com/a-to-z-guides/blood-urea-nitrogen https://answers.yahoo.com/question/index?qid=20070123232417AAizcHA https://answers.yahoo.com/question/index?qid=20080112173835AAhlEeG http://www.healthline.com/health/bun https://labtestsonline.org/understanding/analytes/bun/tab/test https://answers.yahoo.com/question/index?qid=20070123232417AAizcHA https://labtestsonline.org/understanding/analytes/bun/tab/test http://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=167&ContentID=urea_nitrogen_serum http://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=167&ContentID=urea_nitrogen_serum
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