Since June of 2015 I have had 6 urine tests. 4 of the 6 indicated that I have a trace evidence of blood. As well, one showed a trace of protein. My urologist wants to do a cystoscopy. My concern is that trace is a vague term and I am concerned that this indication may be within normal bounds. What are the gradations in the tests for blood in urine test? Regarding my medical history, I have had a radical prostectomy in 2002. My most recent PSA reading is .07.