What are the main causes of proteinuria?

The main causes of proteinuria are physiological factors, glomerular diseases, renal tubular diseases, etc.

1. Physiological factors such

as intense exercise, fever, cold or high temperature environment stimulation, etc., will cause physiological proteinuria.

2. Glomerular diseases

Acute glomerulonephritis, membranous nephropathy, IgA nephropathy, lupus nephritis, diabetic nephropathy and other reasons lead to the destruction of glomerular barrier function, increased vascular permeability, albumin and high molecular protein in the blood into the blood, which will lead to proteinuria.

3. Renal tubular diseases

Acute renal tubular necrosis, pyelonephritis, interstitial nephritis and other diseases cause renal tubular epithelial cells to be damaged, so that protein reabsorption disorders, and then lead to small molecular proteins filtered out from the glomerulus into the urine, which will cause proteinuria.