Tempus CRC Surveillance Study: A ctDNA Biomarker Profiling Study of Patients With CRC Using NGS Assays

Inclusion Criteria: * Known or suspected colorectal adenocarcinoma (Stage I to IVA disease) * Planning to undergo or has undergone a surgical resection for suspected adenocarcinoma of the colon or rectum with curative intent. * 18 years old or older * Willing and able to provide informed consent * Willing to have additional blood samples collected during routine surveillance visits Exclusion Criteria: * Not willing to have additional blood samples collected * Pathology that is not consistent with colorectal adenocarcinoma