What Numbers Indicate Normal Kidney Function?

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Normal kidney function is indicated by blood urea nitrogen test results between 6 and 20 milligrams per deciliter, according to MedlinePlus. Healthy creatinine blood levels are 0.6 to 1.1 milligrams per deciliter for women and 0.7 to 1.3 milligrams per deciliter for men.

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