Hi Al! Thank you so much for your reply. Thank you also for sharing the information on the testing from Genova. I was not aware of that test and it does sound like that could help a person understand how difficult it would be to remove toxins if they have them. I will ask Dr. Stock (my friend)what genes they are testing to see if they are somehow related. Seems like the two tests could work well together. I will also look at Quicksilver its sound that they are doing more of an assessment of hg in the body already.? The test that Dr. Stock is working on is a saliva test (cost around $100) that determines an individuals sensitivity to hg. In particular hg's effects on things like attention, mood and memory.(neurobehavioral) This is especially important information to understand about children or women preparing to get pregnant as damage can be lasting in a developing fetus and children. And, from hearing the information you provided on the test Genova does, perhaps in others it can have lasting effects as well. What Dr. Stock has found is that even though mercury is toxic to everyone, some of us have much greater sensitivity to the toxin so would need to take extra care to avoid / detox slowly etc. The research that this is in collaboration with ( Big NIH study coming out at the end of the year) will be very impactful especially where children and amalgams are concerned ( the main focus of the research). I am trying to help Dr. Stock determine if a test like this is something people would actually want / need and if particular groups of people would be more interested than others. Any insight you may have would be so helpful, this is a tough topic because so much controversy surrounds it from so many areas. I think you are all experts here and am excited to hear from you. Just let me know if you have other questions I can answer.