Fig. 1.
Renal hemodynamic profile vs. estimated glomerular filtration rate (GFR). While endogenous filtration markers (serum creatinine and cystatin C) can estimate GFR (eGFR), the application of Gomez' equations to measurements of insulin and para-aminohippurate (PAH) clearances can generate a complete intrarenal hemodynamic profile. RPF, renal plasma flow; RA, afferent arteriolar resistance; RE, efferent arteriolar resistance; πG, glomerular oncotic pressure; FF, filtration fraction; PGLO, intraglomerular pressure; ΔPF, filtration pressure across glomerular capillaries.