I'm still working on my testing and diagnosis also. I have an upcoming appointment with a GP that I noted the reason as requesting testing for autoimmune disease nonspecific. In preparation, I have made a detailed list of my symptoms (this took me many days to compile) and I've tried to include information such as frequency and when I first noticed them. I've made a copy to just hand to the doctor while I keep my original so we can go down the list together and I don't forget half of what I planned to say.
And then I made a separate list for the tests I know that I want. So far, I want the blood tests to check for AQP4, ANA, KCSF, IgL, and CRP (all related to autoimmune antibodies). And I plan to request the lumbar puncture, and the evoked potential test along with an MRI for my spine and cervical spine with contrast. I've already had my normal labs and vitamin B levels run.
I imagine you gleaned some great information from the article, I love the articles on this site. But thought I would chime in to say that you are not alone, I'm at the same mile marker on the journey, and maybe something I noted for my plan will help.
I'm wishing you the very best! 💜