Is urine protein negative normal?

Urine protein negative is a normal phenomenon. Because under normal circumstances, the human urine does not contain protein, in the urine routine test, will show a negative result of urine protein. Show a positive result of urine protein, may belong to abnormal phenomenon, if only transient performance, may be physiological urine protein positive. For example, strenuous exercise, eating foods containing high protein and other factors, can cause transient urine protein positive, after self-conditioning can return to normal. If there is a positive result of urine protein for a long time, it may be due to abnormal kidney performance, mainly seen in glomerulonephritis, will cause kidney filtration function to show disorders, can show urine protein positive results.