Found this last night. Check it out;

Kelmer test suspension (January 2007)

Following several reports of adverse reactions to the DMSA used for our Kelmer test, we have suspended this test. Please contact the laboratory for further information. We regret any inconvenience this may cause.

From; http://www.biolab.co.uk/news.html

I had this test 2 years ago prior to amalgam removal.
It wasnt conclusive and i felt like crap for a week after. I wouldnt recommend it.

Virago