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Elevated BUN to Creatinine Ratio: Sensitivity and Specificity

Introduction: Serum BUN (blood urea nitrogen) to serum creatinine ratio. Generally >15 is indicative of prerenal renal failure or upper GI bleed, though there are other causes such as excessive protein turnover.

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Tags: Blood Test Tag this Finding.

Associated Diagnoses:

Upper GI Bleed

68% sensitive, 98% specific

Prerenal Kidney Failure

87% sensitive, 80% specific