I get my blood drawn every 3 months to test how my liver is doing on Tysabri. Usually they collect the blood when I go in for my infusion--that way I don't have to make a second trip to the lab to get the blood drawn. It saves being poked twice!

I have to say, I just read that conference call with Elan regarding the assay to test for JC antibodies. The doctor Carlos V. Paya M.D., Ph.D., who is answering questions, is really bad at explaining things and answering questions-I can't follow half of what he is saying!! And it's not because it's technical/medical language!