Cancer blood test fails to catch disease earlier in major study

medicalxpress - A blood test designed to find cancer early did not work as hoped in a major new study, according to the company that makes it.

AI Summary: A large trial evaluating GRAIL’s multi‑cancer blood screening test failed to meet its primary goal of earlier cancer detection. The disappointing result casts doubt on the test’s clinical utility for population screening, sparks debate over marketing and clinical use, and prompts calls for clearer evidence before widespread adoption.

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