high bun levels 20 mg/dl) have an increased risk of infection . The filtered waste products leave your body through urine. Reducing the BUN and creatinine levels in your dog may be possible by trying a few different methods. It is linked with kidney-related diseases or decreased flow of blood to the kidneys secondary to dehydration or congestive heart failure. "BUN" is an acronym for "blood urea nitrogen," and results can vary depending on an individual's age as well as the lab that processes the test, as explained by Mayo Clinic. This site complies with the HONcode standard for trustworthy health information: verify here. The normal Bun level for children is 5-18 milligrams per deciliter of blood. A healthy blood potassium level falls between 3.6 and 4.8 milliequivalents per liter. You should get the results in a few days, depending on how fast the lab and your doctor’s office can work. Like BUN, high levels of creatinine could mean there is a lot of waste product that hasn’t been removed by the kidneys. But for the most part, your kidneys get rid of it by flushing it out of your body through urine. Urinary obstructions, kidney disease, dehydration, congestive heart failure and heart attack can cause elevated BUN levels. However, high BUN is also an indicator of other underlying conditions. Some other causes for a high BUN count are a high protein diet, dehydration and congestive heart failure. Taken together, high levels of BUN and creatine are often an indicator of kidney disease. Bitty is 4 pounds and the pickiest eater you will ever come across. This is because the BUN level by itself doesn’t always reveal much. Bleeding in the stomach and intestines can also cause BUN to rise. The normal Bun level for children is 5-18 milligrams per deciliter of blood. High levels of creatinine and BUN (blood urea nitrogen) in dogs is usually a sign of poor health. Talk to your doctor about what could be causing the problem and plan your next steps. A high BUN count usually indicates that the kidneys are not working properly, but there are other issues that can cause high results, as stated by Mayo Clinic. Healthy kidneys filter urea and remove other waste products from your blood. This causes a high BUN-to-creatinine ratio. This is a simple test done by drawing blood out of your body through a vein in your arm. In: Harper's Illustrated Biochemistry. If your doctor suspects you may be getting kidney problems, they may order the BUN test. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. In addition to kidney problems, other reasons for a high BUN level. Dr. Gurmukh Singh answered. Your doctor will give you specific instructions. Creatinine is another waste product that healthy kidneys filter out of your body through urine. Some medications can cause an elevated BUN level including some antibiotics, anti-inflammatory medications, and gout medications. Infants have lower levels than other people do, and the range in children varies. See if your kidney disease is getting worse. High BUN level is an abnormality and usually caused by kidney problem, as kidneys play the role of excreting excessive BUN in blood. BUN-creatinine ratio helps determine the cause of sudden dysfunction of kidney or acute renal failure. ", American Association for Clinical Chemistry: "Creatinine. A wide variety of drugs can cause an increase in BUN. This causes a high BUN-to-creatinine ratio. For example, certain medications such as prednisone, or tetracycline antibiotics can cause such increases. Blood urea nitrogen (BUN) appears elevated if there is an elevated level of urea in the blood. If you’re only getting a BUN test, you can eat and drink. New York, N.Y.: McGraw-Hill Education; 2015. http://www.accessmedicine.com. To do this, you may have a blood sample taken to calculate your estimated glomerular filtration rate (GFR). Serum creatinine level from 1.5 mg/dl upto 2.5 mg/dl and blood Urea from 45 mg/dl up to 100 mg/dl and high BUN results will be 21 – 47 mg/dl: Which result when kidney inefficient due to a criterion called nephritis (i.e. 30th ed. Like BUN, high levels of creatinine could mean there is a lot of waste product that hasn’t been removed by the kidneys. If your doctor suspects that you have kidney damage, If your kidney function needs to be evaluated, To help determine the effectiveness of dialysis treatment if you're receiving hemodialysis or peritoneal dialysis, As part of a blood test group to help diagnose a number of other conditions, such as liver damage, urinary tract obstruction, congestive heart failure or gastrointestinal bleeding — although an abnormal, Congestive heart failure or recent heart attack, Dehydration, resulting from not drinking enough fluids or for other reasons, Certain medications, such as some antibiotics. But elevated blood urea nitrogen can also be due to: If kidney damage is a concern, ask your doctor what factors may be contributing to the damage and what steps you can take to try to control them. A high LDL level may increase your chance of having heart and circulation problems. Vaccine updates, safe care and visitor guidelines, and trusted coronavirus information, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic School of Continuous Professional Development, Mayo Clinic School of Graduate Medical Education, See our safety precautions in response to COVID-19, Book: Mayo Clinic Family Health Book, 5th Edition, Newsletter: Mayo Clinic Health Letter — Digital Edition, FREE book offer – Mayo Clinic Health Letter, New Year Special -  40% off – Mayo Clinic Diet Online. The blood urea nitrogen to creatinine ratio has been devised to measure this relationship and arrive at a diagnosis. A normal BUN result ranges from 6 to 20 milligrams per deciliter, reports MedlinePlus. Conditions that cause elevated BUN values include a protein-rich diet, dehydration, and heart failure. Cats newly diagnosed with late-stage chronic kidney disease or acute renal failure will require aggressive treatment, lifestyle management, and ongoing veterinary supervision to prevent relapse. © 1998-2021 Mayo Foundation for Medical Education and Research (MFMER). High Blood Urea Nitrogen (BUN) is an abnormal medical indicator that can bring patients lots of symptoms. A lab tech will take a sample of your blood from a vein in your arm or the back of your hand. When your BUN levels are compared with your creatinine levels, it gives a fuller picture of what’s happening with your kidneys. Check out these best-sellers and special offers on books and newsletters from Mayo Clinic. It helps them see how well your kidneys are working. Normal levels of BUN are between 7 and 18 mg/dL. See our safety precautions in response to COVID-19. A high protein diet in conjunction with poor kidney ability, may also cause the issue. The rise in BUN may be faster in patients with essential hypertension in the malignant phase than in patients with other underlying primary renal disease. Normal BUN levels can vary, but generally a high level of blood urea nitrogen is a sign that your kidneys are not working correctly. Our kidney has strong metabolic ability and compensation, and one kidney will be able to complete its work. All rights reserved. Make a donation. In some cases, high BUN levels are acute and easily resolved with dietary changes. Causes of a routine health screening level for children is 5-18 milligrams per deciliter of blood the hospital certain! Reference range used by your kidneys are working normally tests show high levels these best-sellers and special offers books... Tests show high levels of urea in the body, it gives fuller! That range, this could mean liver disease or malnutrition. `` by trying a few days depending. 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