Medical calculators

BUN:Cr

BUN/Creatinine Ratio

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Anatium is a study resource, not medical advice. Nothing here is a diagnosis, a prescription or a substitute for a clinician who has seen the patient. Check every number against a current local protocol before it touches anyone, and never act on a result you cannot reproduce yourself.

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How it is calculated

Normal ratio: 10-20:1. >20 suggests pre-renal azotemia.

About

The ratio of urea to creatinine, which rises in dehydration and in upper gastrointestinal bleeding.

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