Well, my step-dad thinks everything is okay. He now says he remembers passing a small kidney stone along with the blood that one day, and he hasn't had a bit of blood since, nor any other symptoms (he started antibiotics that same day). His insurance co. declined to pay for the CT scan, saying it was overkill, and he can't afford to pay for it himself, so he cancelled the appointment and is just going to go back for a 6-month follow up with the urologist if no further symptoms appear.

Hopefully all will be well...I'm naturally paranoid, but I have to trust his judgment on this.