Hi Kim, MS diagnostic testing includes the following:
1) MRIs of the brain and spine,
2) Evoked potentials testing (EPT) of the eyes and ears that measure the speed at which signals travel to the brain,
3) Physical exams that test coordination, strength, sensation, balance, and reflexes,
4) A lumbar puncture.
I had all tests done after my first attack but no diagnosis. Those tests were repeated five years later after my second attack. The last test was a lumbar puncture, which was positive. That result convinced my neurologist that I had MS and gave me the diagnosis.
A lumbar puncture might be useful for two reasons:
1) If the spinal fluid is positive for o-bands, it indicates inflammation in the brain and that is a strong indicator of only a few possibilities, MS being one of them. It is mostly reliable.
2) At the very least, it is a baseline test that can be compared to future LPs. This is true of all the MS diagnostic tests.
As Lori said, it is good that you are advocating for yourself. You are pushing for answers, keep it up. Lori also stated it is a good idea to seek out the advice of an MS specialist. I would add that If one isn't available in your area, you could seek out a general neurologist and ask them in your initial appointment how many MS patients they treat. You could gauge their interest in the disease in such a conversation. It might involve a bit of trial and error to settle on a doctor you like.
I wish you well on your journey and hope you'll update us on what you find out. Best, Kim, moderator