Cheers for the reply Mate. The problem is at the moment, that the N.H.S does not recognise mercury from fillings as a problem and the only test the doctor could give me was a blood test. I mentioned the porpherin test which he said he had heard of it. So he sent me to the department of allergy and immunology in Sheffield and they hadn't even heard of it and did not have a clue how to test for it!
I seem to have lost total faith in the N.H.S at the moment
I think i will get some advice from the mercury-free dentist that is removing the rest of my fillings next week. Maybe they will know some place near by that will be able to give me the right test. To be honest i will be just glad to have them removed test or no test.