A Multi-center Study on Human Microecology Assisted Diagnosis of Colorectal Cancer

A Multi-center Study on Human Microecology Assisted Diagnosis of Colorectal Cancer

As for this research，we want to find whether the intestinal microecology (flora, peptidoglycan fragments) have certain distribution characteristics in colorectal diseases; whether it can predict the development of disease/as a prognostic indicator.

We even want to find whether it can predict the development of disease/as a prognostic indicator.

Inclusion Criteria:

• people who is going to get the colonoscopy examination

Exclusion Criteria:

• people who was diagnosed as one cancer，expect for CRC; who has had the antibiotics or the medicine that treats for colorectal disease, except for medical probiotics, in one month; who has had the laxative and the colonscopy in one week; who had a operation in three month.