Patent ID: 8030002

Claim:
A method for screening an individual for risk of having or developing Autism, comprising the steps of: obtaining a stool sample from the individual; analyzing the stool sample to detect the presence or absence of one or more antigens associated with two or more pathogens, wherein the two or more pathogens comprise Helicobacter pylori, Cryptosporidium, Entamoeba histolytica, Giardia , Rotavirus, Adenovirus, Cyclospora, Microsporidia , or Isospora belli; analyzing the stool sample to detect the level of chymotrypsin present; determining that the individual is at risk of having or developing Autism based on the presence of the one or more antigens associated with the two or more pathogens and an abnormally low level of chymotrypsin in the stool sample.