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What is a Urea Reduction Ratio (URR) and how does it measure the adequacy of hemodialysis?

April 26, 2017adequacy hemodialysis measure ratio reduction urea urr

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What is a Urea Reduction Ratio (URR) and how does it measure the adequacy of hemodialysis?

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URR is one way to find out how much cleaner your blood is after dialysis. This is known as dialysis adequacy. A blood test that measures the blood urea nitrogen (BUN) is done at the beginning and at the end of your hemodialysis treatment. The amount of urea in these two blood samples is compared to see how much was removed during dialysis. So, if you have a URR of 65%, it means your blood is 65% cleaner than when you started this dialysis treatment.