BUN is a common blood test that tells important information about how well the kidneys and liver are functioning. It is the blood urea nitrogen test that measures the urea nitrogen in the blood. This is how the body typically makes and gets rid of urea nitrogen: • The liver breaks down protein used by the body’s cells and generates ammonia which contains nitrogen. • The nitrogen when it amalgamates with other elements, such as oxygen, hydrogen, carbon, etc, forms urea which is a chemical waste. • The urea travels from the liver to the kidneys via the bloodstream. • Healthy kidneys excrete urea and remove other waste products from the blood. • The filtered waste products are eliminated through the urine after the blood filtration process. The BUN test reveals whether the urea nitrogen levels are higher than normal indicating that your kidney or liver function is not accurate. It is either the liver producing too much nitrogen or the kidneys not excreting BUN properly. We recomme