Nephrology · Internal Medicine · Emergency Medicine

Blood Urea Nitrogen to Creatinine Ratio calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Blood urea nitrogen

mg/dL

Allowed range: 1–200 mg/dL

Serum creatinine

mg/dL

Allowed range: 0.1–20 mg/dL

Result

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Clinical inputs

Blood urea nitrogen (mg/dL)Accepted range: 1 to 200
Serum creatinine (mg/dL)Accepted range: 0.1 to 20

Primary source

Diskin CJ et al. The differential diagnosis of elevated blood urea nitrogen/creatinine ratio. Am J Kidney Dis. DOI: 10.1016/S0272-6386(12)80042-8. PMID: 6722273. Scope: BUN/creatinine ratio computed from concurrent serum BUN and creatinine in mg/dL. (1984)

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