Bun Creatinine Ratio Calculator


About Bun Creatinine Ratio Calculator (Formula)

A Bun Creatinine Ratio Calculator is a tool used in medical diagnostics to assess kidney function and certain health conditions. The ratio of blood urea nitrogen (BUN) to creatinine in the blood can provide insights into kidney health and hydration status.

Formula for Bun Creatinine Ratio Calculation:

The formula for calculating the BUN Creatinine Ratio involves dividing the blood urea nitrogen (BUN) level by the serum creatinine level. The formula is:

BUN Creatinine Ratio = BUN levelSerum Creatinine level


  • BUN Creatinine Ratio: The calculated ratio of blood urea nitrogen (BUN) to serum creatinine, often reported in units like mg/dL.
  • BUN level: The concentration of blood urea nitrogen in the blood, usually measured in milligrams per deciliter (mg/dL).
  • Serum Creatinine level: The concentration of creatinine in the blood, commonly measured in mg/dL.

This ratio can help assess kidney function and provide information about factors such as hydration, muscle mass, and metabolism.


  1. Kidney Function Assessment: A higher BUN Creatinine Ratio may indicate potential kidney problems or reduced kidney function.
  2. Dehydration Monitoring: The ratio can help assess dehydration levels, as changes in hydration affect both BUN and creatinine levels.
  3. Medical Diagnostics: The BUN Creatinine Ratio is used as a diagnostic tool to evaluate kidney health and function in conjunction with other tests.
  4. Monitoring Health Conditions: The ratio can provide insights into conditions like kidney disease, heart failure, and certain metabolic disorders.
  5. Treatment Evaluation: Physicians may use the ratio to monitor the effectiveness of treatments targeting kidney or metabolic issues.

In summary, a Bun Creatinine Ratio Calculator involves calculations that assist in assessing kidney function, hydration, and health conditions by analyzing the ratio of blood urea nitrogen (BUN) to serum creatinine in the blood.

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