What Are Normal Blood Urea Nitrogen and Creatinine Levels for Healthy People?

Normal levels of blood urea nitrogen, or BUN, for adults and children range from 10 to 20 and 5 to 18 milligrams per deciliter, respectively, according to WebMD. For adult men and women, normal creatinine levels range between 0.7 to 1.3 and 0.6 to 1.1 milligrams per deciliter, respectively, according to Healthline.

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