Hi Pam, I looked at the Genovations (owned by Genova Diagnostics, formerly Great Smokies) website to see how the tests there compare to the ones I?m talking about. But I could not access any specific information, which makes me suspicious. Also, I must admit, I have come over the years to have a very low opinion of that company after getting wacked out results on a number of tests. In the tests I?ve done with them the erroneous results have been so extreme that the margin of error they demonstrate makes all results meaningless. It is partly because of those experiences that I am cautious about these genetic tests I?m looking into. But I think these tests are for real. The Mayo clinic does them too. Here is a Washington Post article on the subject: http://www.washingtonpost.com/wp-dyn/conte...6041701274.html To save my hands the typing necessary to explain more, here is an excerpt from the article: The liver is responsible for regulating most chemical levels in the blood. When you swallow a pill, the medication typically travels via the bloodstream from your stomach to your liver. There, one or more types of liver enzyme process the drug, breaking it down into forms that are easier for the rest of the body to use. Some of the drug travels on through your bloodstream; the rest is tagged as poisonous and filtered out. The most important liver enzymes in drug metabolism are the ones in the "cytochrome P450" (CYP) family. They process 25 percent of all drugs, including those that cause the most adverse reactions -- antidepressants, anti-psychotics, painkillers, beta blockers (which slow the heart rate and lower blood pressure) and drugs used to treat attention-deficit hyperactivity disorder (ADHD). Say you take a drug that is mostly processed by the enzyme CYP 2D6. If your liver produces too much of this enzyme, it could over-process the drug and flush it right out of your body, and you'd get no therapeutic effect. If, on the other hand, your liver produces too little of the 2D6 enzyme or none at all, the drug wouldn't be sufficiently broken down. Instead, it would build up in your bloodstream. You could overdose on what, for most people, would be a normal dose... ...Like other genes, those that code for liver enzymes can vary by race and even your ancestors' geographic origin. Most people have two good copies of the 2D6 gene, so they produce a normal amount of the related liver enzyme. But an estimated 7 percent of Caucasians have two bad copies of the gene -- or no copies at all. These "poor metabolizers" don't produce any of the enzyme. In my own case I suspect I have one weak copy and one good copy of the 2D6 enzyme gene because I have had trouble with both SSRI?s and beta-blockers (both generally metabolized by 2D6) and because my father was hospitalized because he could not metabolize a 2D6 drug at all. All that gives me a lot to go on, but something definite would be even better. I would love to have a doctor who was into this on his or her own, but I don?t have one. Yet I suspect they would be ready to take in the test information if I could just hand it to them. I went through 16 months of treatment for Lyme a couple years ago. It didn't resolve all my troubles but it did help. Are you at the beginning of that? I hope it works out well for you. best, Priscilla