I'm with Steve in Dallas - your doc probably sees 4 great reports and is going to the 6 month interval sooner than expected. However, I wouldn't just assume that - a phone call to his office would probably be good.
My doc told me every 3 months for 2 years and he has stuck with it. I have my next PSA on Oct 1 and then the one after that will be 2 years so we'll see what he says then. David
Diagnosed Dec 2007 during annual routine physical at age 55
PSA doubled from previous year from 1.5 to 3.2
12 biopsies - 2 pos; 2 marginal
Gleason 3+3; upgraded to 4+3 post surgery
RRP 4 Feb 08; both nerves spared
Good pathology - no margins - all encapsulated
Catheter out Feb 13 - pad free Feb 16
PSA every 90 days - ZERO's everytime!
Great wife and family who take very good care of me