Can a lumbar puncture provide a diagnosis of MS? My ms neurologist that I have saw to determine if I have ms said they won't do one as my mri were normal . Just had 2 small t2 hyperintense lesions in the subcortical white matter which she says is within the normal for my age which is 47 . Spine all clear as well . I live in canada and they don't do that for diganosis of ms .
Lumbar puncture to analyze spinal fluid and help in the diagnosis of MS is done everywhere, even in Canada. Your doctor probably does not think the test is warranted in your case. For a test to be useful, it must have either a high positive or negative predictive value in your situation. Your doctor likely considered your history, exam and imaging findings and concluded that predictive value of performing a spinal tap was insufficient to warrant putting you through the procedure
Revere (Rip) Kinkel MD
Director of the Multiple Sclerosis Program
Professor of Clinical Neurosciences
University of California San Diego