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A new blood test was found to detect colon cancer with more than 80% accuracy — and to rule it out for 90% of healthy people. Doctors speak about how this could improve screening rates and outcomes.
As with most blood tests, false-negatives can happen, meaning results could come back negative when a cancer does exist — although Grail reports that negative cancer test results from Galleri ...
The small positive predictive value (PPV = 10%) indicates that many of the positive results from this testing procedure are false positives. Thus it will be necessary to follow up any positive result with a more reliable test to obtain a more accurate assessment as to whether cancer is present.
A new blood test to detect cancer at an early stage has shown promising results, according to a study, as scientists aim to make the process as common as cholesterol or blood sugar testing.
[6] [7] For example, analysis of blood samples from cancer patients has found a propensity for increased CTC detection as the disease progresses. [8] Blood tests are easy and safe to perform and multiple samples can be taken over time. By contrast, analysis of solid tumors necessitates invasive procedures that might limit patient compliance.
Scientists believe a groundbreaking new test may predict patients at high risk of developing bowel cancer with 90 per cent accuracy. Research, published in the journal Gut on Thursday, could lead ...