Medical dictionary. 2011.
urea nitrogen — A chemical in the blood produced by the breakdown of protein. Urea nitrogen is removed from the blood by the kidneys. Blood urea nitrogen (BUN) tests are sometimes done to see how well the kidneys are working … English dictionary of cancer terms
urea nitrogen appearance — the amount of urea in grams produced by a person s body over a specific period of time, closely related to the amount of nitrogen that has not been absorbed by the body. It is calculated as the sum of the urea excreted in the urine plus that… … Medical dictionary
urea nitrogen — see under urea … Medical dictionary
Blood urea nitrogen — The blood urea nitrogen (BUN) test is a measure of the amount of nitrogen in the blood in the form of urea, and a measurement of renal function. Urea is a substance secreted by the liver, and removed from the blood by the kidneys.PhysiologyThe… … Wikipedia
blood urea nitrogen — BUN BUN n. [acronym] (Med.) same as {blood urea nitrogen}; the concentration of nitrogen in blood present in the form of urea; used as a measure of kidney function. Note: Blood usually contains 10 to 15 mg of nitrogen per 100 ml in the form of… … The Collaborative International Dictionary of English
blood urea nitrogen — see urea nitrogen, under urea … Medical dictionary
Blood urea nitrogen — (dt.: „Blut Harnstoff Stickstoff“), meistens in mit BUN abgekürzt, ist ein Maß für die Menge des Stickstoffs im Blut, der durch den Harnstoff hervorgerufen wird. Die Leber produziert Harnstoff im Harnstoffzyklus als Abfallprodukt der… … Deutsch Wikipedia
Urea — Urea … Wikipedia
Nitrogen balance — is the measure of nitrogen output subtracted from nitrogen input.[1] Blood urea nitrogen can be used in estimating nitrogen balance, as can the urea concentration in urine. A positive value is often found during periods of growth, tissue repair… … Wikipedia
Blood urea nitrogen (BUN) — A measure primarily of the urea level in blood. Urea is cleared by the kidney. Diseases that compromise the function of the kidney frequently lead to increased blood levels … Medical dictionary
