Here's how your body typically forms and gets rid of urea nitrogen: A BUN test measures the amount of urea nitrogen that's in your blood. Please visit Yashoda Hospitals for a free second opinion or more information on the management and care of kidney disease.A common blood test, the blood urea nitrogen (BUN) test reveals important information about how well your kidneys are working. In either case, please seek your doctor’s advice. If you have a bleeding disorder, or you are taking blood thinners, it may cause you to bleed more during the test. There will be bruising at the puncture site, an accumulation of blood, or infection. There are very few risks associated with the BUN test. If you are taking just the BUN test, you may not need to fast.Īre there any risks associated with the test? You may be asked to stop taking those medications for some time. The symptoms of high BUN levels are:īefore taking the BUN test, it is important to inform the doctor about any medications you take, such as steroids or antibiotics, as those medications could alter the test results. The BUN test helps detect the levels of blood urea nitrogen, study the functioning of the kidneys, and diagnose kidney disease. What are the symptoms of high BUN levels? The blood urea nitrogen helps in the early detection of a kidney disorder and planning appropriate treatment. If the kidneys aren’t able to remove the urea nitrogen, it means they aren’t functioning normally. It shows the level of urea nitrogen in your blood. Specific tests, such as glomerular filtration rate (GFR) and creatinine clearance, help diagnose kidney failure.īlood urea nitrogen tells you how well your kidneys are functioning. There is no definite BUN value that indicates kidney failure. A higher than normal BUN level indicates a decline in kidney function due to kidney disease or disorder. What level of BUN indicates kidney failure?īlood urea nitrogen (BUN) is measured to diagnose kidney function. Certain medications, such as steroids and antibiotics, also cause the BUN levels to rise. Other factors, such as a high protein diet, dehydration, heart failure, gastrointestinal bleeding, stress, pregnancy, and ageing, can cause high BUN levels. The inability of the kidneys to remove the waste products efficiently causes high BUN levels. You will feel a slight prick of the needle, but the pain will go away quickly. Then they insert a needle into your vein to take the blood sample, which is collected into a vial. What happens during the Blood Urea Nitrogen test?ĭuring the BUN test, a lab technician cleans the puncture spot in the middle of your arm with antiseptic.
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