I just had a QSART done on my legs that came back normal. I want to rule out completely that I do not have nerve damage that is causing my POTS. Is there any value to having a thermoregulatory sweat test or is the QSART a full proof test. I have a lot of numbness (showed up on EEMG) and I want to make sure that is not causing POTS. The Dr, that ran the test said I do not have a automonic nerve problem but he spent a whopping 6 minutes talking to me. Any input would be great, Thnks