If these tests aren't run, then I am not sure if it would be "marginally earlier", it might be much later or even never that the problem is discovered.
Ideally, all chemical processes in the body could be known and we could have an almost "mechanical" model of the body. How else but with more testing can be reach that knowledge?
Can you? The problem is the test's sensitivity and specificity, there's not much statistical work to do after the test on a single case. It's not an advanced model deciding whether you're sick or not.
> Ideally, all chemical processes in the body could be known and we could have an almost "mechanical" model of the body. How else but with more testing can be reach that knowledge?
Yeah, ideally we would. Not a doctor, but as far as I can tell, we're a thousand years away from that.