What is BUN in a blood test?


Quick Answer

A blood urea nitrogen, or BUN, test is used to gauge the amount of nitrogen in the blood of a person. It also helps to understand how well the liver and kidneys are functioning, as stated by the Mayo Clinic.

Continue Reading

Full Answer

If the urea nitrogen levels are high in the blood, it shows that the kidneys are not functioning properly. A person is advised not to consume a lot of meat or other protein-rich food 24 hours prior the test. A BUN test may be conducted together with a creatinine test. According to WebMD, the amount of creatinine in the body also helps to ascertain if the kidneys are functioning properly. Both tests are used to determine the BUN-to-creatinine ratio, which helps to check for conditions, such as dehydration.

Learn more about Diagnostics & Imaging

Related Questions