![]() ![]() A lab technician will tie a band around your arm to dilate your veins for drawing the blood with a sterile syringe. Only a tiny amount of your blood will be drawn for the BUN test. There shouldn’t be any side effects or complications associated with this test. If you are asked to fast before the test, you can bring some snacks to have after the test. After the testĪfter the test you can apply pressure on the site where blood was drawn, to stop further bleeding. During the at-home test, a small needle will be used to prick the finger and a drop of blood will be taken to send to the lab for testing. This sample will be used to test in the laboratory. Then they will draw an adequate amount of blood using a needle after cleaning the site with an antiseptic. During the Testĭuring a lab test, the provider may tie a plastic band around the top area of your arm to increase blood flow in the vein. You can clarify this with your healthcare provider. But if it is done along with other tests, and if those tests demand fasting, you may have to fast for 8 to 12 hours. BUN test alone, normally does not require fasting. ![]() Some food and medicine may interfere in getting the right values during the test. Before the testīefore scheduling the test, you must visit the healthcare provider to check whether you need to undergo any dietary or medicinal changes. The healthcare provider may take it from your vein or finger, depending upon if it is an at-home test or a lab test. You need to give a sample of your blood to check the BUN. You also need to limit your daily intake of fish, meat, and other protein-rich foods at least 24 hours before this test. Some medicines, like tetracycline, methyldopa, and carbamazepine, can raise your BUN level, and hence, your doctor may suggest stopping these medicines for the time being. However, you should inform your doctor about all the medications you are currently taking to avoid complications. You should only follow the instructions given by the doctor who recommended the test. You do not need to undergo any special preparation before a BUN test. The test may also be done if you have a feeling to urinate frequently, fatigue, itching, trouble sleeping, muscle cramps, or swelling in legs and ankles. So, you will have to look if you have a hereditary kidney issue, high blood pressure, heart disease, or diabetes. Generally, kidney diseases will not show any early indicators. Why do I need a BUN test?Ī BUN test will be recommended as part of a routine checkup or if the healthcare provider suspects kidney disease. This test is part of a series of tests known as comprehensive metabolic panel. What is the BUN test used for?Ī BUN test can help diagnose a disorder related to Kidney. ![]() The other names for the BUN test are the Urea Nitrogen test and Serum BUN. In contrast, the BUN level tends to be lower in patients suffering from liver diseases. The level of urea and nitrogen will be higher in cases of kidney problems, heart diseases, and dehydration. If you need to know the exact amount of urea currently present in your blood, you should undergo a Blood Urea Nitrogen test, which is called BUN, in short. However, if your kidneys fail to function properly, the level of nitrogen and urea in your blood will rise. However, for the most part, your healthy kidneys discard it by flushing it out of your body through urine. ![]() Your kidneys, when they are healthy, remove the BUN, generally leaving a small amount of it in your blood. Your liver releases this BUN into your blood, and it ends up eventually in your kidneys. The liver breaks down the proteins in your food - and while doing so, the liver creates blood urea nitrogen, also called BUN. What is BUN Test?Īs already mentioned, BUN test is a diagnostic procedure to check the health of your kidneys. It essentially measures the urea nitrogen count in the blood to find out ailments related to it. The BUN test or Blood Urea Nitrogen Test is a common blood test performed to check the proper functioning of the kidneys. ![]()
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