Dear List, This is my second time posting this message. I thought maybe if I worded it different, it might get more response. Thank you to Will Johnston who gave me some information, anybody else have anything they could share. I am going tomorrow to have a PET Scan done, and will be going without being medicated for the Parkinsons in almost 8 years. I ordinarily take sinemet CR, eldepryl, amantadine, and tasmar. I take my last dose at 7PM tonight and the test should be completed by 3 or 4 tomorrow afternoon. That seems like a long scary time for me without meds. I need to know what to expect (I know the unexpected!!). I am affected on both sides, but my left is much worse. Thank you in advance for any help you can give me. Diane Leeds