Net filtration pressure (NFP) is the effective pressure that moves fluid from a capillary into the surrounding space. In the kidneys, it is calculated by comparing glomerular and Bowman’s capsule pressures, and it helps explain how the glomerulus produces filtrate during urine formation.
Introduction
Net filtration pressure is an important concept in renal physiology because it describes the balance of forces driving fluid through the glomerular filtration barrier. Blood enters the glomerulus under pressure, while proteins and fluid pressures in Bowman’s space resist or assist that movement.
The result is expressed in **millimeters of mercury
