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A BUN test, also known as a blood urea nitrogen test, is a laboratory test that measures the amount of urea nitrogen in the blood. Urea nitrogen is a waste product that is produced when protein is broken down in the body. The test is typically ordered to help evaluate kidney function, as the kidneys are responsible for removing urea nitrogen from the blood. The test may also be ordered to help diagnose and monitor conditions such as dehydration, kidney disease, or liver disease. The BUN test is performed on a blood sample taken from a vein in the arm.
This page is provided for educational and informational purposes only and does not constitute the provision of medical advice or professional services. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice regarding any of the tests and conditions referenced above are advised to consult with a licensed clinician. Always seek the advice of your qualified health provider regarding a medical condition and do not disregard professional medical advice or delay in seeking it because of any information on this page. If you think you may have a medical emergency, immediately call 911 or go to the nearest urgent care center or hospital.
