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BUN/Creatinine Ratio details

What BUN/Creatinine Ratio shows

This ratio compares two kidney-related waste markers โ€” BUN and creatinine โ€” to help clarify the likely cause behind an abnormal kidney test result. A high ratio (BUN rising more than creatinine) often points toward dehydration, a high-protein diet, gastrointestinal bleeding, or reduced blood flow to the kidneys, rather than a primary kidney problem. A normal ratio with both BUN and creatinine elevated together more often suggests an intrinsic kidney issue itself. A low ratio is less common and can relate to conditions like liver disease, malnutrition, or a very low-protein diet. This calculated value is most useful as a diagnostic clue rather than a standalone screening test.

Normal ranges

Typical adult range

6โ€“22 Ratio

Most labs report a range close to this

Hormunity optimal range

10โ€“16 Ratio

A narrower functional target

Each lab sets its own reference range. Always compare your result with the range printed on your report, and review it with a healthcare provider.

Tests that include BUN/Creatinine Ratio

Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
Quest Not offered
Quest Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
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