I used to work on an endocrine disruptor (EDC) testing program (https://wwww.silentspring.org/detoxmeactionkit/ https://wwww.silentspring.org/detoxmeactionkit/)

I used to work on an endocrine disruptor (EDC) testing program (https://wwww.silentspring.org/detoxmeactionkit/ https://wwww.silentspring.org/detoxmeactionkit/). Analytical laboratories won't deal with individual samples from consumers, so our approach was to collect batches that we sent to the lab all at once. The cost adds up quickly because (1) the analytical chemistry done for the testing requires a mass spectrometer, which need constant expert attention and expensive reference standards, (2) urine needs to be mailed frozen, which requires overnight shipping. The program I worked on didn't test for phthalates because IIRC that would require sending the samples through the mass spec a second time, which substantially increases the price. I think it would be possible to bring the price down if you had your own dedicated mass spec and high volume, but it's never going to be cheap. Unfortunately the usefulness of this kind of testing increases the more you can get tested, e.g. before and after a dietary intervention. I think the market for this kind of testing could be large if there was a way to bring the price down, but that probably requires the development of new analytical chemistry techniques.