I'm not diagnosed with MS but something is slowly damaging my nerves. The doc suspects MS and I have taken these tests so far to specifically determine if I have MS:
1. Brain MRI (3 of them, all positive with lesions)
2. EMG
3. Evoked Potentials (test nerve path from toes, up spine, to head (and hearing)
4. Cervical MRI (looking for lesions of the CNS)
5. Lumbar Puncture
6. Extensive blood tests


I'll have to request for a Western Blot. Glad I read your post. (I started a post called "are these ms symptoms".