What is a blood-based screening test for colorectal cancer and how does it work?

A blood-based test, like Shield™, is optimized to accurately assess for DNA shed by tumors called circulating tumor DNA (ctDNA) to detect colorectal cancer through a simple blood draw. We apply a multimodal approach that analyzes genomic alterations, epigenomic modifications, and proteomics. Shield integrates these signals to produce an actionable result of either “abnormal signal detected” or “normal signal detected.”1-4