Sounds like we're in agreement that you'll generally need (an AI to produce) a good shot at a diagnosis before ordering these tests then. Your original post sounded like they just get thrown into the mix at initial consultation.
(I do think the radiation concerns are a bit excessive, but there's also the problem of false positives. A lot of people have some weird "deviations" that have no impact at all, but result in goose chases if something else goes wrong and they show up.)
Of course, the symptoms have to produce a clue as well but some tests should be routine for checkup.. some stuff like itchiness or sudden diabetes or lack of control of limbs or visual issues, smelling issues, constant thirst and pain.. There are all clues.. I wonder if Ai could now diagnose that actress that diagnosed with MS and turned out to be false. It would a good test.
(I do think the radiation concerns are a bit excessive, but there's also the problem of false positives. A lot of people have some weird "deviations" that have no impact at all, but result in goose chases if something else goes wrong and they show up.)