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The blood urea nitrogen or BUN is a blood test that measures the amount of urea nitrogen in the bloodstream. It reflects how well your kidneys are. When a person is dehydrated, false results might be obtained as BUN levels increase when blood is concentrated. Elevated BUN levels indicate dehydration, excessive protein intake and impaired renal function. Low BUN levels indicate over hydration, liver damage and malnutrition.
If you are not sure what your blood pressure should be or whether your pressure is a little lower or higher than it should be, take a look at this helpful chart which puts all the information neatly at your fingertips!
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