Pops,

You don't know for sure that the PSA is moving up and down. All you are
looking at are numbers. When the Doc says he doesn't know why the numbers
are moving up and down, shows he's not very intuitive. There are a number
of reasons that could explain the different numbers. The first number .24
is really meaningless as right after surgery there can be some residual
psa still in the system. The .12 could very well be the lab equipment
needs calibrated or fixed. I'm two years out from my LRP and have had two
1 results but they came from the same lab at Quest Diagnostics. All the
rest have been <.1 at other labs. I did a followup from the last .1 I had
four days later at another lab at my expense and the results were <.06. Be
patient and don't rush to judgement on the results. As long as you are
getting <.1 I wouldn't worry about it. You might even try having the blood
draw taken to another lab and have an ultra-sensitive test run. I'm not a
doctor just a survivor but when your urologist was so quick to consider
EBRT and can't explain what might cause your results to vary, I would
consider a second opinion. Side effects of EBRT is not plesent and will
have long term effects on your body.

Ron S.