Urine tested positive for blood said its normal for patients that had radiation therapy for prostate cancer also are ther any cancer cells in urine bl?

Cystoscopy: You need a urologic evaluation including ct scan and cystoscopy. It could be irritation from the prostate radiation but bladder cancer after prostate radiation is a possibility as well. The sooner you get evaluated, the better.

Possibly: Radiation therapy can cause inflammatory changes in the bladder which can result in microscopic blood in the urine. However a urine cytology should be performed to rule out possibly bladder abnormalities. Additionally, if the history of radiation therapy is in the past, then a cystoscopy (camera to look in your urethra and bladder) may be warranted. Please discuss further with your doctors.