(I'm Carla now, not anonymous any longer.)

I am sorry that I don't know where you would get the patches tested. I believe that one seller provides a simple sort of test where they simply say that certain metals are present or not, but no amounts or percentages given, so you don't know how much you are discharging.

I think if you went to a regular testing laboratory, the kind of labs all cities have, you might not know how to interpret their figures...I mean, if it's 30 nanograms of mercury or 10 parts per million of cadmium, what does that mean in health terms - a lot? hardly anything? So, it would be best to find someone who specializes in measuring and interpreting just what is on these pads, rather than simply giving an abstract figure. I myself would like to find such a person who could do this. Sorry I have not been more helpful, Chelan.