The Idylla MSI Test provides fast and accurate information on MSI status directly from 1 FFPE sample in colorectal cancer samples, showing 99.7% and 97.5% concordance against Promega MSI and IHC, respectively. The use of 7 novel, monomorphic biomarkers provides unbiased test results and eliminates the need for paired normal tissue samples, enabling optimal sample stewardship, resource optimization in the lab, and eventually leading to improved patient management.