It would be nice to have this information to see if any trends are discovered (all of this is theoretical, I question whether measuring excreted compounds rather than stores is is relevant but that’s a separate point) however it is unclear what value this information will provide and seems unlikely it will generate anything actionable.

With that in mind, it’s hard to justify the colossal costs that would be involved in administering such a program. Young (< 50) healthy adults shouldn’t even really be getting annual checkups (in my professional opinion and per several guidelines) and annual blood work is definitely not indicated.

Annual urinalysis is not indicated as part of the general work up for patients of any age, so this would be adding a whole extra step in specimen collection and not just adding on a test.

Healthcare is generally a zero sum game and if we divert $ and lab resources to something like this that means other tests and procedures are not being done.

A small prospective study as the authors suggest would be interesting, yet still expensive. It’s a huge stretch to say everyone should be getting this and ignores the harm that this would cause.