Colorectal cancer (CRC) is one of the most prevalent, but highly preventable, cancers in the US. Much progress has been made in reducing CRC incidence and mortality; however, gaps in CRC screening remain, arguably the most critical of which is timely follow-up after positive results of stool-based tests (SBT), such as the fecal immunochemical test (FIT) and FIT-DNA test. The yield of a positive SBT result for advanced neoplasia (the combination of CRC and advanced, precancerous polyps) is in the 20% to 35% range, 1 representing one of the highest yields for advanced neoplasia of any indication for colonoscopy, 2 yet rates for colonoscopy completion in this context are variable, reported as low as 18% in some centers. 3 Delaying or foregoing this second step of screening is associated with more advanced-stage disease and doubled 10-year CRC-related mortality. 4 In this study, Ciemins and colleagues 5 describe a novel CRC screening completion measure to quantify this gap in care. Ciemins and colleagues 5 used deidentified electronic health record (EHR) data from OptumLabs Data Warehouse, which comprise demographic, clinical, and utilization and visit data for individuals from more than 50 health care organizations (HCOs). The data warehouse also contains administrative claims data for approximately 10% of individuals with EHR data. Ciemins