I've been tested for the biomarker twice. Once in 2007 when getting my second opinion, and once earlier this year when my neuro had me go see the neuro at the MS Clinic. I think my neuro, who is probably in his early 80s, might have been thinking about retiring and was lightening his workload. I didnt like the neuro at the MS Clinic (I thought she was a bit arrogant, and a brand new neuro this year...plus I couldnt understand her accent very well)

The MS Clinic did the second NMO antibody test, and I'm guessing they might have done it to double check. I think there was some question for my MS diagnosis in their minds because I didnt have brain lesions (just a few dots in places where you wouldnt typically find MS lesions) but I did have spinal lesions (T12 and C4). Along with clinical signs of optic neuritis (none of my MRI's have ever seen a lesion on my optic nerves)