Had Blood drawn on Monday,   I received my 19th Tysabri infusion 2pm on Friday 11/19, also had MRI in a.m. She dug for vein because I stupidly forgot to get extra hydrogenated to raise my vein's. Still have a wonderful bruise. A woman a few beds across the room from me was screaming In pain when they were trying to find hers. She was receiving something to help for a problematic pregnancy or something.