Urine occult blood 2 + kidney function test is normal may be the early stage of nephritis, but also may be urinary tract infections stones and other causes of hematuria. There may also be physiological occult blood. Occult blood 2+ kidney function is normal, it may be caused by disease, the most common cause is all kinds of acute and chronic nephritis, in the early stage of nephritis patients only manifested as positive occult blood or positive urine protein, while kidney function is normal. In addition to other urinary system diseases, such as urinary tract infection, urinary stones, tumors, etc. can also lead to hematuria, at this time most of the kidney function is normal. Furthermore, physiological reasons, such as strenuous exercise, can also lead to a transient positive occult blood. Positive occult blood, you need to consult the urology department or nephrology department, improve the urine routine, urinary ultrasound, urine erythrocyte phase-contrast morphology examination, if necessary, complete cystoscopy, etc., to find out the cause, and comply with the doctor’s instructions for standardized treatment.