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. The test, called Galleri, failed to lower the number of people diagnosed ...

Despite efforts by test maker Grail to highlight outcomes the company considers positive, some experts are warning against using the Galleri test and others like it.

A closely watched clinical trial in Britain that screened blood for early detection of cancer did not show a reduction in ...