thereI think it's a crock of sh*t, pardon the pun. How about the benevolent Australian Gov't assist in preventative medicine, rather than testing for what they hope you have so medical inc can get their paws into you. The Australia Govt is made up of liars (lawyers) whose sole aim is to feather their own nest with easy money before they retire. They run consultants and public servants to think of ways to take money out of your pocket and into theirs. Another fun fact you may not know.. this kind of test gets many false positives and their is lots of evidence that it doesn't work very well.
Considering the past form of the Australian Govt, I can't say I'm surprised to find it doesn't work very well.