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Acute Renal Failure: How High is BUN Level Dangerous

Questions: I am diagnosed with acute renal failure and the BUN level is high. I want to know how high is BUN level dangerous?

Topic: Live Doctor

Answers: Acute renal failure is featured as sharply decline of kidney function. The kidneys cannot well filter the waste products. BUN is a kind of waste product of protein. So there will be high BUN level as a result. How high is BUN level dangerous to patients with acute renal failure?

The BUN is one of the waste products in our body. It should be filtered out by kidneys. Because of sharply decline of kidney function, kidneys lose their ability to filtrate waste products. So BUN will accumulate in blood, causing high BUN level. Then at what level is BUN dangerous?

Normally, if the BUN level is too high, the doctor will advise you to do dialysis? When is dialysis needed with high BUN level?

If you have anuria or oliguria for more than 24-48 hours, then dialysis is needed when BUN level is more than 21.4mmol/l or it goes up 9mmol/l per day.

What you should especially know is that if the BUN level is elevated to 54mmol/l, then you need to take dialysis immediately to prevent terrifying consequences.

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