Why Is There Protein in Urine?

When some people go to toilet, they find that in urine, there is foam, which even does not disappear. What is it? They become worried. Is it serious or not?
The phenomenon which we mentioned is called proteinuria actually. In brief, proteinuria means that there is protein in urine. A normal person’s amount of protein in urine is 40 to 80 mg, and the maximum is 150mg, which is called physiological proteinuria. Because the amount of protein in urine is less, the examination shows negative. If the amount of protein in urine is more than 150mg with 24 hours, it is abnormal. The examination will show positive.
Does protein in urine indicate kidney disease? Does abnormal amount of protein in urine indicate damage in kidney? As a matter of fact, protein in urine can appear when a person is healthy. After strenuous exercise, labor, excitement, too cold, too hot, or in stress condition, abnormal amount of protein in urine will appear. It is called temporary proteinuria. It can disappear after several hours or several days.
Of course, even positive protein in urine can be divided into physiological one and pathological one. The degree and the renal damage are also different. It means that if the protein in urine is high, it probably means that the kidney is damaged and inflammatory reaction takes place. How shall we deal with the large amount of protein in urine? If patients have found that the protein in urine is high, they should have another examination. In the second examination, if the protein in urine is still high, they should have examination about red blood cells, white blood cells, the deposition of urine, etc. In addition, they should have a systematic examination to judge whether there are other diseases.
After all examinations, if patients are diagnosed with kidney disease, such as nephritis, nephrotic syndrome, diabetic nephropathy, or other kidney disease, they should take effective treatment as early as possible. Is there any better therapy to treat kidney disease and eliminate the protein in urine?