What are the causes of high urine protein?

If protein is found to be elevated in urine routine examination, it is necessary to distinguish the strength of the increase in order to better find the cause. If the urine protein shows a weak positive or a (+), which may be caused by physiological reasons, such as concentrated urine, it may show a weak positive or a (+), or elevated temperature, strenuous exercise, and menstrual period of women may show a weak positive or a (+), when normal, urine protein will turn negative. If the above conditions are ruled out, it is possible that the urine protein is positive due to pathological reasons, and a careful differential diagnosis should be made. A series of other tests should be done to confirm whether the urine protein is positive from kidney disease itself or from kidney damage caused by other systems of the body. If the kidney damage caused by other systems of the body, it can be accompanied by characteristics unique to other system diseases of the body, such as urine protein positive caused by systemic lupus erythematosus, which can be accompanied by hair loss, rash and mouth ulcers; if the kidney damage caused by the kidney itself, it may show bilateral eyelid edema, increased protein in urine, etc.