The immune system is a very LARGE part, why would these tests then be a waste of time? Isn't it better to find one part of the body, that reacts ok to these things? Sure there are certain substances that one should always try to avoid, but consider what is in every dental material and then attempting to avoid one thing and then finding your exposed to another.

I dont think we know enough about all other poisons as to be sure they are preferable to the ones you mentioned. It is all chancey, but I would rather have the serum test done at least to narrow it down a little. I do not know how accurate it is no, but from what I see, it appears to be pretty accurate in my regard.

Do you know of any dental material that does not contain the chemicals you have mentionied aside from Gold? because for those of us who cannot afford gold, we may not have much choice. Or we leave the amalgams in place.