Do you mean they stained your biopsy samples in order to do the histology? They always do that so that the cells show up under the microscope. There are different specialized stains they may use sometimes, or maybe it's borderline and they want another opinion. Could be a lot of things.
I'm replying to your first post after reading Tall Allen's apt comments. You wrote:
Originally Posted by alan49
my prostate biopsy has been done with dies the first tests have not responded normally so more tests are being done and my appointment has been delayed for two weeks .should i be concerned
Did you mean that the biopsy resuls was flawed or that it indicated a need for additional testing other than a biopsy? Sometimes, despite the doctors best efforts in doing the biopsy, core samples are "crushed" when the biopsy needle meets the tissue at an unfortunately unfavorable angle, as I understand it, and not usable. If it happens to just one or two out of many cores taken, that may be okay, but it could warrant a repeat biopsy if crushed cores create too much uncertainty. There could be other reasons for a flawed biopsy result, including incidents in processing. The cores are delicate, and there is a lot of hands on labor in the preparation process, plus mechanical and electrical equipment involved, and accidents can occur.
If results are ambiguous, then other tests such as the PCA3Plus, a "free PSA", or other tests may be called for. You could call the doctor and ask for a more detailed explanation.