Mouncey has sought to become the first transgender woman to play in the AFLW,and had represented Australia in handball as a male,before her transition.
"I have uploaded all blood tests I have dating back to the end of 2015 until last month,as well as the data I provided the AFL re. athletic data. The reason,is to show the reality of where I sit,to show that this is not because I don't meet their requirements,"Mouncey wrote.
"The testosterone data,to show how far below requirements I am. To do otherwise,I would have risked constant speculation about that,and possibly being labelled a cheat for being above,which is not something I can live with.
"Essentially the toll of doing this on my own has been far too great. The AFL has treated me like shit,with every effort made to wear me down to a point where I couldn't continue.
"Eventually,what has gone on behind the scenes will come out,and it paints a sad picture of an organisation with no leadership,who cares only for its corporate image above all else.
"There are a number of things that I can't risk by continuing this fight,which are far more important than football."
The AFL released its gender diversity policy last month,in which it stated that trans women would need"maintenance of testosterone at or below 5 nmol/L for at least two years","to ensure that the competitive advantage of higher levels of testosterone have dissipated to an acceptable degree at the time the trans or non-binary person proposes to play in the AFLW competition".