Posted 5/31/2016 4:19 AM (GMT 0)
Yes the PSA should be much lower than before he started. There are no 'magic' numbers. Just lower and not rising is all you need.
Until he's off the HT, you won't know how well the radiation did as the HT will suppress the PSA.
In general, RT is very slow to take effect, months, year. Right now, I'd say: PARTY TIME!!! 12 to .5, so good.
Enjoy,
Andrew