New Blood Test Can Detect Cancer Four Years Before Diagnosis
Good news! Researchers in China have developed a blood test that can detect some cancers in patients up to four years before conventional diagnosis. The blood test, called PanSeer, is able to detect cancer in 95% of patients who have no symptoms but later receive a diagnosis. The test focuses on five types of cancer – stomach, esophageal, colorectal, lung, and liver – and detects cancerous growths that have not yet caused symptoms in the patient.
The test uses the patients blood plasma to find methyl-groups within particular sections of their DNA. These methyl-groups often signal tumor growth somewhere in the body. One limitation to the current test is that it cannot pinpoint what kind of cancer the individual may have, just that there could be tumor growth present. As with many diseases, early detection is paramount in cancer treatment, and a non-invasive blood test could save many lives if developed properly.
Source: The Guardian Story