ZN from Australia sent the following message to ActuallyFree.info:
"I would love to become a medical test subject. So where or when can I register."
Australia, wow. Most of the information on ActuallyFree.info is meant for the United States, however, some international information is also available. I have a specific page which describes how to become a medical test subject. You can find it here:
The page was created as one of the many ways to get free money or quick cash. It lists a couple of resources for becoming a medical test subject, but once again, they may only be for residents of the USA, not Australia. I would suggest going to a local hospital or medical school. They should be able to point you in the right direction.