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A comment on Blood Test That Spots Tumor-Derived DNA in Early-Stage Cancers. Parent comment

Re:Blood Test That Spots Tumor-Derived DNA in Early-Stage Ca... by greglindahl on Thursday August 17, 2017 @08:08PM (#15042243)
That's a recipe for over-treatment, which is already commonly happening for prostate cancer. As I mentioned earlier, it's very important to study outcomes! And not just do what seems reasonable.
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Re:Blood Test That Spots Tumor-Derived DNA in Early-Stage Ca... by jonahx on Thursday August 17, 2017 @08:11PM (#15042261)
Meaning you'd be treating false positives? I assumed the blood tests were coarse-grained, but surely there are more reliable tests that you could do if you tested positive on a blood test. Or are there not?
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