The Basics of Multi-Cancer Early Detection Testing Data

GRAIL
284 views October 18, 2025

Multi-cancer early detection (MCED) tests represent a breakthrough in cancer screening, helping doctors to screen for dozens of cancers with a single blood draw. This video breaks down the key performance metrics experts use to evaluate MCED tests, including test sensitivity, specificity, and positive predictive value. Learn more about MCED testing: http://www.galleri.com http://www.grail.com Galleri should be used in addition to healthcare provider recommended screening tests. The Galleri test does not detect a signal for all cancers, and not all cancers can be detected in the blood. False-positive and false-negative results do occur. Galleri is a screening test and does not diagnose cancer. Diagnostic testing is needed to confirm cancer. Rx only. See Important Safety Information: https://www.galleri.com/safety-information

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