The samples are always sent to a lab for analysis. It is part of the process. The uro who takes the samples would not look at them, and even if he did, might not make sense of them.
There is nothing to be concerned about - the process is normal. If you had asked for other tests, there might be additional stains used (I was thinking that), but yes, even for the basic view they need them to outline the cells under the microscope. Google Gleason Scores - I sure there is the traditional example out on the web somewhere.