Hi Robyn, I appreciate your sharing very much. I know for sure I don't have POTS. I have had a lot of bloodwork to rule out autoimmune diseases and heavy metals, I also had a genetics test and nothing. I had no symptoms of anything. The tests were negative except for the skin biopsy. The all over pin pricks were it. I have had palpitations since I was younger and they were not a big deal until now. I remember the day well when I woke up and I had a funny feeling in my chest. I thought my it was my palpitations acting up in a weird way. No symptoms but the funny feeling. So I made an appt. for my cardiologist. I had Echo and Stress Test and those were normal. But the holter monitor showed lots of stuff. I had lots of PSVC's, PVC's, couplets, bigeminy, trigeminy. I would like to get an appt. to Mayo but I don't think they will take me. Question: How hard was it for you to get into Mayo? I called and asked about getting an appt. and they told me I have to have a referral from a Dr. but that doesn't guarantee me an appt. It is somewhat mysterious so I wonder what comes next. I don't like taking the metoprolol but if it keeps my heart rate good I am okay with it for now. Thank you so much for your response. Keep in touch with us here. I wish you well also.