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Oct 30, 2023 · The BUN blood test measures the amount of urea nitrogen in your blood. If your levels are outside the normal range, this might mean either your liver or kidneys are not working well. Why You Get ...
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- Overview
- Why It's Done
- How You Prepare
- What You Can Expect
- Results
A common blood test, the blood urea nitrogen (BUN) test reveals important information about how well your kidneys are working. A BUNtest measures the amount of urea nitrogen that's in your blood. Here's how your body typically forms and gets rid of urea nitrogen: 1. Your liver produces ammonia — which contains nitrogen — after it breaks down protei...
You may need a BUNtest: 1. If your doctor suspects that you have kidney disease or damage 2. If your kidney function needs to be evaluated, especially if you have a chronic condition such as diabetes or high blood pressure 3. To help determine the effectiveness of dialysis treatment if you're receiving hemodialysis or peritoneal dialysis 4. As part...
If your blood sample is being tested only for BUN, you can eat and drink normally before the test. If your blood sample will be used for additional tests, you may need to fast for a certain amount of time before the test. Your doctor will give you specific instructions.
During the BUNtest, a member of your health care team takes a sample of blood by inserting a needle into a vein in your arm. The blood sample is sent to a lab for analysis. You can return to your usual activities immediately.
Results of the BUN test are measured in milligrams per deciliter (mg/dL) in the United States and in millimoles per liter (mmol/L) internationally. In general, around 6 to 24 mg/dL (2.1 to 8.5 mmol/L) is considered normal. But normal ranges may vary, depending on the reference range used by the lab and your age. Ask your doctor to explain your resu...
The blood urea nitrogen (BUN) test measures how much urea nitrogen is in your blood. It helps a healthcare provider determine if your kidneys are working as they should. BUN levels vary according to your age and sex.
The liver converts these products to non-toxic urea. Urea is then circulated in the blood to the kidneys where it is eliminated from the body. Healthy kidneys eliminate more than 90 per cent of the urea the body produces, so blood levels may indicate how well your kidneys are working.Also elevated during pregnancy
A low BUN level can occur normally in the second or third trimester of pregnancy. 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.
Jul 26, 2023 · A BUN test measures how much urea nitrogen a person has in their blood. Urea nitrogen is produced when the body breaks down protein. The liver releases it into the blood and sends it to the ...
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Oct 31, 2024 · Blood urea nitrogen (BUN) is a blood test performed as a marker of kidney function. It is part of the basic or comprehensive metabolic panel done for health screening. It is also used to monitor the progression of kidney failure. BUN is produced by the breakdown of protein and usually cleared from ...
