Well, my only expertise is thanks to my own cancer. I had a PSA level of 18 when I was referred to the Urology Dept of my local hospital. I was told the 4 is the 'threshold' level. Above that, and you need further investigation. That said, I was also told that the PSA level is a fairly poor indicator of prostate cancer, which is why people have the digital rectal exam., the mra scan, the bone scan, the biopsy et al. So I wouldn't make any assumptions just yet. A high PSA can be caused by things other than prostate cancer. You will know the situation in a week or two. If it is prostate cancer, don't panic. Treatment is relatively straightforward, whichever of the options you go for.
regards,
Hermit