Mechanisms of Glomerular Albumin Filtration and Tubular Reabsorption

Table 2

Glomerular filtration and reabsorption of albumin and low-molecular weight proteins (LMWP) in humans estimated from rat micropuncture data [12].

	Albumin	LMWP
Bowman’s capsule concentration	22.9 μg/mL	72.1 μg/mL
Plasma concentration	37.0 mg/mL	73.0 μg/mL
Sieving coefficient	0.00062	0.987
Estimated glomerular filtration amount in humans	22.9 μg/mL × 100 mL/min × 24 h × 60 min = 3.3 g/day	72.1 μg/mL × 100 mL/min × 24 h × 60 min = 10.4 g/day
Estimated tubular reabsorption in humans	3.2 g/day	9.6 g/day