پاسخ : آزمون طلا های پانزدهمین دوره المپیاد زیست شناسی ایران
غلظت GFR= جریان ادرار *غلظت ادرار / غلظت پلاسمائی
This equation is the same form as that for clearance (Equation 32-4). Thus, clearance of creatinine provides a means for determining the GFR. Clearance has the dimensions of volume/time, and it represents a volume of plasma from which all
the substance has been removed and excreted into urine per unit time.
امیدوارم انگلیسی بتونی بخونی (منبع : berne)