[mdrew]

I would say it could be an issue, but is controlled for. The Quest Interface has a special cautionary statement for phlebotomists collecting samples for this test that says; "Note: Sample collection devices coated with PTFE/Teflon® and PVDF should be avoided because of potential specimen contamination."

Edit: grammer

[cmbuck]

This guidance may help for sample collection, but wouldn't fully address the whole chain of custody. If the test equipment or handling tools/processes in the lab expose the samples to PFAS, then the test is botched. And this is challenging because PFAS are so prevalent and ubiquitous.

Don't get me wrong, I would love to have a test available for PFAS levels. However I've previously been denied a test from the medical provider due to the issues I've outlined above. So I think it would be helpful to know if/how they have addressed this problem.