Hi, I have a test by a laboratory (UK) in which they mesured the proportion of metals bound to metallothioneins (MTs). MTs are anzymes which normally bind to zinc (40%) and copper (60%) and are involved in a number of metabolic functions. In my own case they found that 5% of my MTs are bound to cadmium and that 3% are bound to mercury. These metallothioneins are taken from serum. Has any of you done this kind of test? Any clue about its value? I'm undergoing a chelation therapy, through Cutler's protocol. I've done five 'rounds' so far, with 12.5 mg of DMSA every 4 hours. Three days every one or two weeks.