What are psa and tumor markers for prostate bone metastasis?

PSA means: Prostate specific antigen. Men all have a level of psa if they have a prostate. Arbitrary normal levels are age & race dependent. If you have prostate cancer, and bones are involved, your psa will likely be greater than 10 ng/ml. Psa levels that double in short intervals are more likely to do this. However, very undifferentiated prostate cancers may not generate psa, and one can have bony mets.