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I think the idea is that, if you retake the test, your system will be in a different state (our organism's biochemistry fluctuates naturally). So if something i

I think the idea is that, if you retake the test, your system will be in a different state (our organism's biochemistry fluctuates naturally). So if something in your system caused a false positive, there's a chance it won't be there when you retake the test and you will get a true negative. Basically, you're thinking of your blood composition as stateless, when it may also be counted as an "external factor".

darawk 11y ago
Ya that is definitely the idea. The question is is that idea correct. It seems almost certain to be the case that sometimes it's correct and sometimes it's not, but i'm not aware of any research into which cases are which, and I think that is a huge problem.