What you can expect

During the blood urea nitrogen test, a member of your health care team takes a sample of blood by inserting a needle into a vein in your arm. The blood sample is sent to a lab for analysis. You can return to your usual activities immediately.

July 02, 2016
  1. Blood urea nitrogen (BUN), serum. Mayo Medical Laboratories. http://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/81793. Accessed May 9, 2016.
  2. Rodwell VW, et al., eds. Catabolism of Proteins & of Amino Acid Nitrogen. In: Harper's Illustrated Biochemistry. 30th ed. New York, N.Y.: McGraw-Hill Education; 2015. http://www.accessmedicine.com. Accessed May 10, 2016.
  3. Blood urea nitrogen. Lab Tests Online. https://labtestsonline.org/understanding/analytes/bun/tab/test/. Accessed May 10, 2016.
  4. Inkler LA, et al. Assessment of kidney function. http://www.uptodate.com/home. Accessed May 9, 2016.