Leaked kidneys is a layman's term to describe the condition of the kidneys that secrete too much protein in the urine. In the medical world this term is better known as proteinuria. To understand more about leaky kidneys, see the following explanation. Proteinuria or albuminuria is a condition in which urine contains an excessive amount of protein. Leaking of protein into the urine is usually caused by damage to small blood vessels (glomeruli) in the kidneys, so it cannot filter blood properly. Although dangerous, but there is a tolerance limit for the presence of protein in the urine. The average normal limit of protein excreted in the urine ranges from 5-10 mg per day. Meanwhile, the presence of protein in the urine with an amount of 30 - 300 mg per day or more than 300 mg per day can indicate interference in your kidneys. What are the Causes of Kidney Leaking? Certain diseases and conditions can cause the kidneys to leak, including: Diabetic nephropathy Diabetic neph