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JC Virus Stratified blood test

Hi there! We recently moved to NC and I had my 1st appt with my new Neurologist last week. She was wonderful and really took time with me and ordered bloodwork and MRI’s. I am able to see my lab results online and I’m a bit concerned because I tested positive for the JC Virus stratified blood test. (<20 is normal and mine was .50) My segmented neutrophils test was very high as well. Anyone else? I’m petrified of getting PML. I have been on Tecfidera for 6 years. I’m thinking my doc will be switching meds…

  1. Hi @athomerhonda. Hopefully, your doctor will discuss the results at length with you and help you decide whether you should remain on Tecfidera. Here is an article that might interest you. It discusses Tecfidera and the JC virus: https://multiplesclerosis.net/living-with-ms/101-understanding-pml-jc-virus. Here is another article that takes a bit of a different perspective: https://multiplesclerosis.net/living-with-ms/pml-jc-virus-misconceptions. I hope the articles help and that you get some valuable input from the community. Keep us posted if you feel comfortable doing so. Gentle hugs! - Lori (Team Member)

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