Gold Horse,
You may want to read this.....
http://www.ncbi.nlm.nih.gov/pubmed/21679999
This was a large study of 10,000 patients. Nobody with an undectable PSA at 10 years who were OCG6 developed metastatic disease by 20 years. The article suggests that for OCG6 you could even safely stop testing your PSA annually......
At least for another 10 years.....
I also have a study from Walsh at J.H. that states none of his patients in a 30 year period who were OCG6 died or developed metastatic PCA.
find something else to worry about..............