Serum testing for heavy metals is recommended, and if results are concerning, a provoked test can be considered, though provoked reference ranges are unreliable.

“if you wanted to do this you could overlay um you could overlay a serum with a provoked like if i i would start with a serum and if serum looks funny you could do a provoke but just realize the reference ranges on a provoked mean essentially nothing you don't know what is normal unprovoked and i think everyone on a provoke is going to go high”