I have had a skin biopsy done at North Shore University Hospital on Long Island. I do not know if they do the other tests but am in the process of trying to find out. Have same symptoms with lots of fasticulations, loss of hot and cold, and typical neuropathy symptoms in hands and feet. Have had the skin biopsy done at two different times and two different places. Both came back negative. EMGS etc. all normal. However, am diagnosed with Undifferentiated Tissue Disease. Will try to find some information about North Shore and autonomic testing. My neuro out East told me to go to Mayo Clinic in Minnesotta. They denied me last time I tried to "apply". Will post any info I find. Good Luck...