Be careful. We've had plenty of reports from rather sick members of detox groups who had bad experiences from the rather high doses used in the provoked urine tests.
Furthermore, the agents used to provoke--DMSA or DMPS--don't get into the brain.
Andy Cutler--noamalgam.com--says the provoked urine tests from healthy people are not very different from those of sickly people.
I remember being very frustrated when I was at your stage of the process 4 yrs ago. Testing for HMs is a crap shoot--short of an autopsy!