I've seen both an autonomic neuroloigst and cardioligst at the Clinic before and had the autonomic testing done at the Clinic last year. I had several tests in one day that started early in the morning and ended with me seeing a cardiac electrophysiologist and discussing my results. I didn't have the tilt table that day, but had one previously and also had one later. The tests I had were the sweat test, the blood volume test, the hemodynamic test, and autonomic reflex testing. A month later, I had a 2nd TTT and was then diagnosed with Hyperadrenergic POTS. Later in the year I tried to do the sweat chamber test, but couldn't tolerate it and I also had a skin biopsy. After all this was done, I also underwent several different types of stress tests. A few months prior to my autonomic testing, I also saw a neurologist in the Syncope Dept there who ran a battery of blood tests on me looking for an underlying reason for my dysfunction. He also had my catechlomines tested (I forget the name of the test) where I had to lay down for a while, get my blood tested, and then sit up for a while and have my blood retested. I've also had a 24 urine test done when I was a patient in the hospital, as well as at home too.