Clearance rate is commonly expressed in units of volume per time, such as mL/min or L/hour. The formula for calculating clearance is: Clearance (Cl) = (Rate of elimination of the drug) / (Plasma concentration of the drug)
This equation provides a measure of the body's efficiency in eliminating a particular substance. It is important to understand that clearance is not the same as the rate of elimination but relates this rate to the concentration in plasma.
