Just some food for thought about genetic testing in general. I started to use the test you mentioned above, but didn't after doing some doing some checking with a med doctor / physicist friend of mine at MIT. What we found out is that there is a great deal of variability in the matrices that are being used for the testing - one companies report may well vary, even wildly, from another companies report. In the genetics marketplace, there are not yet any standards for the accuracy of such tests. For me, I want a high degree of accuracy before I start making significant medical decisions based on the test results.
I don't advocate for - or against - testing. I just wanted to share what I learned about accuracy issue so that y'all can consider the accuracy issue when making a decision about paying for genetic testing that many insurance providers don't, as yet, cover.
For me, however, I decided that I would want to know that a test result has a pretty high degree of accuracy, or even that it is generally accurate, before I start basing medical decisions on the results.
Of all of the types of tests you are considering, the only type who's accuracy I was able to determine was for personal reaction to types of pain medication. Beyond that, the reports back were really iffy.