@Sarah_Brewitt 

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Sarah_Brewitt

Tysabri and JCV jump

Hi, I started Tysabri this year and had my JCV test done last month at my 6th infusion. My level has gone up from 0.98 to 1.76 since starting. Is it this normal? Thanks 😊
@Sarah_Brewitt

Hi thanks for the link I’ve read that and how it affects the risk etc. The numbers/risk increase of pml doesn’t bother me. I’m more wondering about the jump over 6months - if that’s normal?