i was dx'd based on my mri's, sx's and neuro exam.
it was after that, that i had an LP which was + and sealed the deal.

my test went well. i drank a lot to be hydrated, the radiologist that did it was at the hospital and he used a floroscopy machine to see where the needle was.

i didn't get the spinal headache which some people do. they numb the skin before putting the needle in. i laid on my stomach. IF the dr is hurting you too much ask them to STOP. you are your own best advocate even during a test.
it's not easy, but do-able.