Glomerular capillaries have a continuous glycocalyx layer in health and the total transendothelial filtration rate of solvent ( J v ) to the renal tubules is normally around 125 ml/ min (about 180 litres/ day). Glomerular capillary J v is more familiarly known as the glomerular filtration rate (GFR). In the rest of the body's capillaries, J v is typically 5 ml/ min (around 8 litres/ day), and the fluid is returned to the circulation via afferent and efferent lymphatics.