Protein. Under normal conditions the renal glomeruli filter amino acids and up to 30 g of intact protein each day, virtually all of which is reabsorbed in the proximal tubules. Renal disease often increases the glomerular permeability to proteins and/or decreases tubular reabsorption, resulting in proteinuria.

What does the glomerulus filter?

The glomerulus filters your blood

The thin walls of the glomerulus allow smaller molecules, wastes, and fluid—mostly water—to pass into the tubule. Larger molecules, such as proteins and blood cells, stay in the blood vessel.

Why proteins are not filtered in glomerulus?

Blood cells and plasma proteins are not filtered through the glomerular capillaries because they are relatively larger in physical size. However water and salts are forced out of the glomerular capillaries and pass into the Bowman's Capsule and are called the glomerular filtrate.