Creatinine Clearance Calculator

Formula

The formula to calculate Creatinine Clearance (CrCl) is:

$$ CrCl = \frac{{GFR \times BSA}}{{1.73}} $$

Where:

$$ CrCl $$ is the Creatinine Clearance (mL/min)
$$ GFR $$ is the Glomerular Filtration Rate (mL/min/1.73m²)
$$ BSA $$ is the Body Surface Area (m²)

What is GFR and Creatinine Clearance?

GFR (Glomerular Filtration Rate) measures the rate at which the kidneys filter waste from the blood. Creatinine Clearance measures the rate at which creatinine, a waste product, is removed from the blood. Both tests are crucial in assessing kidney function and diagnosing kidney disease.

Example Calculation

Assume:

Glomerular Filtration Rate (GFR): 90 mL/min/1.73m²
Body Surface Area (BSA): 1.8 m²

Calculate Creatinine Clearance (CrCl):

$$ CrCl = \frac{{90 \times 1.8}}{{1.73}} = \frac{{162}}{{1.73}} \approx 93.64 \text{ mL/min} $$

Therefore, the Creatinine Clearance (CrCl) is approximately 93.64 mL/min.