Do i have nephritis?

Health counseling description:
Hello: Thank you of his busy schedule to answer my question, thank you! My friend last physical examination, urine test results: occult blood 2 +, other are normal, and he has no other discomfort, will how to defend the treatment he had nephritis??
Kidney patients answered: Hello: should also not nephritis so serious urinary tract infections caused. For renal function tests to see if. If just a urinary tract infection, oral norfloxacin treatment.