# Biogen's StratifyJCV™ Service Help
Keywords: StratifyJCV, TYSABRI, Multiple Sclerosis, John Cunningham Virus, antibody test, adverse events, digital platform

> This page provides information about Biogen's StratifyJCV™ service, a digital platform for managing anti-JCV antibody testing for patients on or considering TYSABRI treatment. It includes details on the service, its benefits, and adverse event reporting.

## Details
- [StratifyJCV™](#): StratifyJCV™ is an anti-JCV antibody test funded by Biogen for patients on or considering TYSABRI. The service includes a user guide and FAQs available on the StratifyJCV™ website.
- [Digital Platform](#): The StratifyJCV™ platform enables MS centers to manage testing digitally, reducing paperwork and human error. Users can order, register, and view test results online.
- [Adverse Event Reporting](#): Adverse events should be reported through appropriate channels in the UK and Ireland, including Biogen contact details and regulatory websites.
- [Abbreviations](#): Key terms include CSF (Cerebrospinal Fluid), JCV (John Cunningham Virus), MS (Multiple Sclerosis), PML (Progressive Multifocal Leukoencephalopathy), and RRMS (Relapsing-Remitting Multiple Sclerosis).