So any lab (ie, hospital) can run these tests? So a physician can literally ask for anything under the sun, and there really is no technical reason why they can

So any lab (ie, hospital) can run these tests? So a physician can literally ask for anything under the sun, and there really is no technical reason why they cannot. It might take longer to get the results for more exotic tests (ie, pfas blood serum levels), but for the most part all labs have the equipment to isolate whatever component may be in your blood (foreign or “native”/natural)