Depends on the vets experience, and how much they charge. A fecal is always a good idea, they may want to do an xray as well, in my case I had xrays done and they decided, again in my case, it was a impacted bowel and used a stool softner/laxitive on her. This cleared the issue in a few days and a month or so later the stool returned to normal. It is an odd feeling very round body that has a well balloon feeling firm but hollow.