can lumbar puncture test for MS rule out lyme?

I am a 32 year-old woman who has been experiencing a myriad of symptoms over the past two years - including dizziness, muscle weakness, fatigue, difficulty concerntrating, general "fugginess", unusual reaction to alcohol, excessive burping.  I had a MRI which showed a number of small lesions (+20) consistent with a demylenating condition, though no lesions in my spine.  While my neurologist suspects MS, I do not have acute episodes, but general un-wellness that comes and goes during the course of the day and sometimes over the course of a couple of days.  I first noticed my symptoms while I was on holiday and they have been pretty persistent ever since, though not really getting worse.  I have been tested for iron deficiency, diabetes, thyroid disorder, as well as a number of things that could cause the neurological problems that can be tested through routine bloodwork (eg. HIV) - all were negative.

I am reconciling myself to a MS diagnosis, but based on my research my symptoms seem to correlate with more lyme than MS.  There is a definite possibility I was exposed to lyme, though I do not specifically remember a tick-bite.  I am awaiting the results of a lumbar puncture to confirm the MS, but my question is this: is there anything that would be revealed in the lumbar puncture that would definitively rule out lyme such that there is no point testing for it?

[Dr Rajgopal]

Hi,
The tests carried out for Lyme disease are- Lyme antibodies detection; Lyme antibodies IgM/IgG by Western blot; Lyme disease by PCR.tests: CSF analysis and  Synovial fluid analysis. Testing of CSF after a lumbar puncture definitely rules out Lyme disease. Please get ELISA and Western blot tests done for confirmation. Hope this helps you. Take care and regards!