PSA jump after 9 months

[RomBo]

I recently had the High Dose Brachytherapy on 9/10. PSA readings after the 1st 3 months were 1.0 and at 6 months .8 which seemed typical of what I was expecting. I just had my 9 month test and it jumped to 3.0. Can this jump be expected this early and being this high. I have been reading that any reading that is more than double is usually caused by cancer that has spread elsewhere. Any concern that I should be worried at this point.

[anitagrace2]

Prostate-specific antigen (PSA) is a sensitive measure of treatment outcome after radiotherapy (RT) for prostate cancer. Unlike after radical prostatectomy, when PSA should be undetectable after treatment, the PSA level after RT falls slowly and may intermittently increase over a number of years. This may be due to PSA release from partially damaged normal prostatic epithelium and/or the long time it may take for lethally damaged cancer cells to die and stop producing PSA