Development and Validation of a Blood Test for Early Diagnosis of Colorectal Cancer

Inclusion Criteria: * Patients over the age of 18 who are able to understand the participant information and sign the informed consent. * Patients who are going to undergo colonoscopy or surgical resection for tumor (CRC). Exclusion Criteria: * Patients who had developed any type of cancer in the 5 years prior to their participation in this study. * Patients who have received previous chemotherapy or radiotherapy. * Patients diagnosed with non-advanced adenomas, serrated polyps, Familial Adenomatous Polyposis or Lynch Syndrome. * Patients with inadequate bowel preparation for colonoscopy. * Patients who have undergone colonoscopy/polipectomy in the previous 5 years. * Patients with hemolyzed plasma.