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bun$10188$ - traduction vers arabe
![[[Reference ranges for blood tests]], comparing urea (yellow at right) to other blood constituents](https://commons.wikimedia.org/wiki/Special:FilePath/Blood values sorted by mass and molar concentration.png?width=200 "[[Reference ranges for blood tests]], comparing urea (yellow at right) to other blood constituents")
Définition
Wikipédia
In medicine, the urea-to-creatinine ratio (UCR), known in the United States as BUN-to-creatinine ratio, is the ratio of the blood levels of urea (BUN) (mmol/L) and creatinine (Cr) (μmol/L). BUN only reflects the nitrogen content of urea (MW 28) and urea measurement reflects the whole of the molecule (MW 60), urea is just over twice BUN (60/28 = 2.14). In the United States, both quantities are given in mg/dL The ratio may be used to determine the cause of acute kidney injury or dehydration.
The principle behind this ratio is the fact that both urea (BUN) and creatinine are freely filtered by the glomerulus; however, urea reabsorbed by the tubules can be regulated (increased or decreased) whereas creatinine reabsorption remains the same (minimal reabsorption).
