I'm considering doing a full blood test panel to rule out all physical causes of my anxiety disorder. I sometimes have the feeling that this isn't all in my head. 

My main suspects are:

\- Low testosterone  
\- Vitamin D deficiency  
\- Too much cortisol

I'm pretty sure something is out of whack. But, the reverse could also be true. Anxiety leads us to have stress more often. And stress leads to low testosterone and mineral / vitamin deficiencies.

So even if they would find low testosterone for instance, would that be caused by anxiety or the other way around?

Anyway, I think it's a smart move. Just to rule it all out for once and for all. Anyone else ever done this? And did they find anything?