Cardio was never first with their test I believe - where they are ahead is sensitivity because of the Luxsheres. Time was also the winner - 15 minutes vs a few hours. I also researched other methods and had them explained to me by Dr G. He already knew and probably still knows where the competition is.
I hear you re wanting updates but it was explained to me that you need to get the science correct first then prove it. Cardio could have taken the European route (CE designation) but chose to do the FDA route because of larger market.
Waiting for science is not for the faint of heart - I too have waited and will continue to wait. Cardio is very close to completion so keep the faith or move your investment to a larger company and allow yourself less frustration.