According to CANCERactive there are tests that can be carried out that detect the presence of cancer cells in the blood stream long before traditional methods, like CT scans.
“Checking for DNA fragments in a simple blood test allows Doctors to non-invasively screen for early stage cancers, to monitor for response to treatment and to monitor resistance to particular treatment. They could be used after surgery to see whether the cancer really has been completely removed.”
CANCERactive is a charity concerned solely with the provision of information about cancer.
You can read the full report here.
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