Cancers leave biochemical markers in the blood that researchers aim to detect
Development of blood test for early detection of cancers advances

Researchers report progress in detecting gene mutations and protein levels in the blood that indicate eight different types of cancers throughout the body. Samples were taken from patients that had already been diagnosed with cancer, and the assay showed the best results for ovarian cancer (98%), but was less efficient for breast cancer (33%). The challenge for the years ahead is to refine the test to measure small deviations in undiagnosed people, without reporting false positive cases.

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