The tests are a bit involved and manual for specificity. E.g. yhe standard product scan for PFxx/C8 just checks for organic fluorine compounds which so happens

The tests are a bit involved and manual for specificity. E.g. yhe standard product scan for PFxx/C8 just checks for organic fluorine compounds which so happens are a constituent of bones. So you need specific tests for each PFxx compound like LC/MS. The brominated compounds are a bit easier to detect as bromine is rare and rather bad in general. However again non-specific, and these have shorter lifetime in blood, so unless you're exposed to huge amounts all the time, it will be hard to catch without LC/MS again. Microplastics are probably funny,.since they require chonky blood sample and repeated fractionation in a centrifuge at the moment. Cheap, but labor intensive at the moment. However automatable.