Blood-Based Colorectal Cancer (CRC) Screening Implementation Into Clinical Practice Highlands

For this study, a commercially available blood-based CRC screening test will be used. The selected test is Shield (Guardant Health, Redwood City, California, USA). The Shield test was developed, and its performance characteristics determined, by the Guardant Health Clinical Laboratory in Redwood City, California, USA, which is certified under the Clinical Laboratory Improvement Act of 1988 (CLIA) as qualified to perform high complexity clinical testing. The Shield test is currently commercially available as an laboratory developed test (LDT). Additionally, Guardant submitted the pre-market approval (PMA) application for the Shield test to the Food and Drug Administration (FDA) in March of 2023. Premarket approval (PMA) is the FDA process of scientific and regulatory review to evaluate the safety and effectiveness of medical devices. To this end, the Shield test is currently under review by the FDA.