@caroljeand There are no blood test for GCA Vasculitis. It requires a CT, MRI and/or PET Scan to Dx GCA with no cranial symptoms. Go for it if you can talk your doctor into it. In retrospect I wish I would have written my symptoms down and presented a rather long note to my Rheumy explaining my concerns. She would not have been able to dismiss them in the same manner that she did when I only spoke of them during appointments - a very expensive health care mistake. I am a strong advocate for myself and in this situation I failed me. I am working with the hand I am delt and trying not to look back except to benefit from the 20-20 view.