It seems that your are offline so I am writing an initial answer. You may ask follow up questions once you read this.
MS is diagnosed on the basis of clinical findings and supporting evidence from ancillary tests. Tests include the following:
Magnetic resonance imaging: The imaging procedure of choice for confirming MS and monitoring disease progression in the CNS
Evoked potentials: Used to identify subclinical lesions; results are not specific for MS
Lumbar puncture: May be useful if MRI is unavailable or MRI findings are nondiagnostic; CSF is evaluated for oligoclonal bands and intrathecal immunoglobulin G (IgG) production.
Please see the reference for above;
The McDonald criteria, which were developed in 2001 by an international expert panel and revised in 2005 and 2010, provide recommendations on the diagnosis of MS, including diagnosis after a single attack. The criteria consist of a combination of clinical, imaging, and paraclinical tests (ie, CSF, evoked potentials). Please see the references;
Please feel free for your follow up questions.
I would be happy to assist you further, if you need any more information.
Thanks for using Just Answer.