NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,241 terms related to cancer and medicine.
We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.
- urea nitrogen
- listen (yoo-REE-uh NY-troh-jen)
- Nitrogen in the blood that comes from urea (a substance formed by the breakdown of protein in the liver). The kidneys filter urea out of the blood and into the urine. A high level of urea nitrogen in the blood may be a sign of a kidney problem. Also called blood urea nitrogen and BUN.