I had a blood test done recently - non MS related and it cam back as positive for Anti Nuclear Antibody activity. My GP wants me to ask my Neurologist if this is as a result of my MS or if not maybe I have another auto immune condition to worry about. Has anyone else had a positive reading for ANS and had MS but been told this is nothing to look further into? I have found a little on line suggesting that people with MS can show positive for ANS but not enough to stop me worrying. I have been diagnosed with MS for 2 years.