Stool Sample Collection Protocol for Development of Screening Test for Colorectal Cancer and Other Digestive Tract Cancers

This is a multi-site, prospective sample collection study. Subjects will be men and women, 40-90 years of age, inclusive, each with a colonoscopic biopsy-based diagnosis of CRC and/or a pre-malignant colorectal lesion with large enough residual lesion to require subsequent surgical excision or complex colonoscopic polypectomy. One stool sample from approximately 300 subjects will be collected in this study. A blood sample will also be collected from subjects.