Which of the following ranges represents the normal BUN values?

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Multiple Choice

Which of the following ranges represents the normal BUN values?

BUN reflects how well the kidneys are filtering waste from protein metabolism. A typical normal range is about 7–20 mg/dL. The range that sits squarely inside that window is 8–20 mg/dL, so it best represents normal BUN values. The other options extend outside the common normal limits (either dipping below or rising above), so they’re not as accurate for describing normal BUN. Remember, exact reference ranges can vary slightly by lab, and factors like hydration and protein intake can affect BUN.

BUN reflects how well the kidneys are filtering waste from protein metabolism. A typical normal range is about 7–20 mg/dL. The range that sits squarely inside that window is 8–20 mg/dL, so it best represents normal BUN values. The other options extend outside the common normal limits (either dipping below or rising above), so they’re not as accurate for describing normal BUN. Remember, exact reference ranges can vary slightly by lab, and factors like hydration and protein intake can affect BUN.

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