Enter the total BUN (mg/dL) and the plasma Creatinine (mg/dL) into the Bun Creatinine Ratio Calculator. The calculator will evaluate and display the Bun Creatinine Ratio.
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Bun Creatinine Ratio Formula
The following formula is used to calculate the Bun Creatinine Ratio.
BCR = TB / PC
- Where BCR is the Bun Creatinine Ratio (unitless; often written as a ratio such as 25:1)
- TB is the total BUN (mg/dL)
- PC is the plasma Creatinine (mg/dL)
To calculate the BUN/creatinine ratio, divide the total BUN by the total plasma creatinine.
How to Calculate Bun Creatinine Ratio?
The following example problems outline how to calculate Bun Creatinine Ratio.
Example Problem #1:
- First, determine the total BUN (mg/dL).
- The total BUN (mg/dL) is given as: 125.
- Next, determine the plasma Creatinine (mg/dL).
- The plasma Creatinine (mg/dL) is provided as: 5.
- Finally, calculate the Bun Creatinine Ratio using the equation above:
BCR = TB / PC
The values given above are inserted into the equation below and the solution is calculated:
BCR = 125 / 5 = 25 (unitless)
Example Problem #2:
For this problem, the variables required are provided below:
total BUN (mg/dL) = 160
plasma creatinine (mg/dL) = 7
Test your knowledge using the equation and check your answer with the calculator above.
BCR = TB / PC = ?
