HomeMedicalBUN to Creatinine Ratio BUN to Creatinine Ratio The creatinine ratio is a measurement of kidney function. The ratio is calculated by dividing the BUN level by the creatinine level. A high creatinine level indicates a problem with the kidneys. Blood Urea Nitrogenmg/dLBlood Urea Nitrogen Serum Creatininemg/dLSerum Creatinine CalculateReset BUN to Creatinine Ratio (BUN:Cr)BUN to Creatinine Ratio (BUN:Cr) Get Result on email Send the result to an email 1 Number of calculations | 0 Likes Copy Link Print Result