They really do just throw pills at you till something sticks. I spent about a year going through a couple different antidepressants and combinations of antidepressants till I got on one that made me noticably manic, then I got diagnosed with bipolar II and switched to a mood stabilizer. It works well, but it sucked getting to that point.

That's really frustrating that they can't figure out a more definitive treatment plan for you when you have actual abnormal blood work. If it's a medical issue and not just self reporting how you feel you would think that would help them with figuring out what's wrong, even without high tech research. That doesn't mean that it won't eventually get sorted out though.

Hang in there