Last year I had a test at a private hospital, who assured me I had severe Mercury poisoning, needed to get all my fillings removed and chelation. I was told my immune system would not recover till then and I would not be able to get rid of viruses. Well guess what went back to same hospital did EDTA challenge test and Mercury not a problem for me now Nickel and Alumininum, neither showed up before. Personally i am sick of this, spent thousands of pounds and havn't go a clue who to trust. And I have to ask myself just how many of us are being conned. Tracy