Proteinuria

What is proteinuria?

Proteinuria is high levels of protein in the urine. Proteinuria occurs when the kidneys leak too much protein into the urine. Proteinuria can be caused by normal activities such as exercise, a recent illness or standing up throughout the day. However, it can also be a sign of kidney disease or a condition called nephrotic syndrome. 

What are the signs and symptoms of proteinuria?

There are often no physical symptoms of proteinuria. The high levels of protein in the urine can be detected with a urine test. Symptoms of severe proteinuria may include:

• Urine that is foamy or bubbly
• Swelling of the hands, feet, face or abdomen