Yes, but, I think this is where we need to go.

We can super-early detect some cancers now, via blood tests. vitamin deficiencies. A plethora of conditions and diseases, early on, too.

Why not test all these things at once, and improve health?

I had blood drawn for an antibody test literally 4 hours ago. I was utterly amazed that I didn't even feel the needle go in. I probably embarrassed myself by how loudly I complimented the nurse. Your mileage will vary.