I have been with the NHS since diagnosis in 2007.
The rule of thumb seems to be that I have a PSA test whenever I or my Consultants ask for it.
For much of the time I have been on a Hormone therapy and would routinely have my PSA tested at 3 month intervals every time I had a HT injection.
The initiative is however with me, I have to telephone my GP's surgery and make an appointment for an injection and blood test.
I then have to telephone the GP's surgery about a week later and ask for the result, they have several receptionists and invariablly they will tell me that the result is 'normal' and I have to specifically ask them for the number.
Having said that the vast majority of the time my PSA has been in the low numbers where the GP and/or their receptionist would consider it to be 'normal'
At times when I have come off HT, I still phone up the GP's surgery and make the appointment for the blood test.
The nurse or phlebotomist taking the blood test invariablly asks 'who is the test for' and I merely give them the name of my Consultant, they never seem to need to see any paperwork.
The only problem I have is that due to pressure of workload I need to book an appointment a couple of weeks in advance, there is no point phoning the surgery and asking for an appointment this week as they are invariablly fully booked.
So as a back up on occassions I will phone my Hospital Urology Nurses who will send me a form allowing me a PSA test at the hospital outpatients, there I merely have to turn up, no need to book an appoitment.
I think a lot of this has to do with taking controll of your own treatment and telling the NHS you need a PSA test, the old addage that 'it is easier to obtain forgiveness than permision' seems to apply.
If you tell them you need a PSA test, tel them the name of the Consultant who needs it, and then phone and ask for the result, it all goes OK. However I have never waited to see what would happen if I did not initiate the test.