All urine excreted by the human body contains protein, just very little, and if it exceeds the normal range it is proteinuria, which is a disease. Proteinuria means that the urine excreted by the human body contains excess protein. When the protein content in the urine exceeds 150 mg in 24 hours throughout the day, it is called proteinuria. A healthy person has only 40 to 80 mg of protein in the urine daily, and the urine is characterized as negative. If the amount of protein in the urine exceeds 150 mg per day, the often prescribed test is positive, which is what doctors call proteinuria. Proteinuria is overwhelmingly associated with kidney disease and is an important objective indicator for diagnosing kidney disease. Of course, physiological proteinuria needs to be excluded, such as the previous day’s intake of large amounts of meat and fish, the body can not consume, excess discharge out of the body, or after strenuous activity, the glomerular blood flow is accelerated, it will be temporarily leaked, so the bubbles in the urine are much more, you should pay attention to go to check the urine.