A 'holy grail' blood test which can diagnose 50 types of cancer before symptoms appear begins trials with 140,000 Britons today. Some cancer tumours are known to shed DNA into the blood a long time before a person would start experiencing symptoms. The Galleri cancer test works by screening the blood for abnormalities that could indicate cancer. Its developers say the test can detect over 50 types of cancer, and pinpoint where they are in the body. Some cancer tumours are known to shed DNA into the blood a long time before a person would start experiencing symptoms.

Source: Daily Mail September 13, 2021 00:19 UTC