An experimental blood test can detect cancer in women who had no symptoms of the disease, and it detected several different kinds of cancer, researchers say
It's a step forward in the race to develop an effective blood test -- one that can tell people they may have cancer long before they have any symptoms. Currently, people can be screened for only a few cancer types.The team at Johns Hopkins University, where the test was developed, say a commercial product is years away and they are working to fine tune their test -- many cancers were not found by the blood test alone.
Vogelstein cautions that the test is far from the market."This is just a first step," he said.The team is now designing a larger trial to better demonstrate that the test can work without too many false positives, meaning it would not wrongly indicate someone had cancer when they did not.Vogelstein said the team was careful to make sure their volunteers were not traumatized by the experience.
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