Dr. Derrick MacFabe from the University of Western Ontario and colleagues in Little Rock, Arkansas have released a study that could potentially lead to a blood test “to identify and screen ASD patients, or even those at risk of developing ASD, before symptoms manifest”.
The Toronto Star reported on this on Jan. 28, 2013 – see:
http://www.thestar.com/news/gta/2013/01/28/autism_linked_to_gut_bacteria_study_finds.html
A review of the study and the original study itself can be seen at:
http://www.microbecolhealthdis.net/index.php/mehd/article/view/19260