Hi tos8,

DNA is what shows in our blood molecules of our genetics and other structures of our body it's hard to explain go to the medical dictionary and it will give a better explanation. The main thing that helps by having a DNA blood test done is it can match up our body chemistry to the right AED's (sz meds) to take with the least side affects. By doing this you don't have to keep trying different AED's to work to control your sz.
I'm happy to hear that the valium is working for you,take note if your sz. happen when there's a low pressure in the weather, your sick, or if your hormones are changing, also take note if you're under more stress and are more tired before the sz. these are all things that can trigger sz. for people. Here's wishing you well and May God Bless You!

Sue