Starr, I am in Ontario and I'm queued up and waiting for the test myself. How it worked for me: my family doctor suggested a psychological screening where it was determined that I should under-go the testing to determine next steps. All of that has been covered by OHIP so far and no-one said anything to me about paying so much money, or any money for that matter. If your medical doctor does not know about PCS then ask him/her to investigate further.
A psychiatrist can determine if your symptoms are enough to diagnose PCS.
I'm interested to see how it goes for you, please keep us posted.
Jamie