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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Lumbar puncture provides access to cerebrospinal fluid for the purposes of diagnosis or treatment. It is particularly used in the initial management of suspected meningitis and subarachnoid haemorrhage, and as a diagnostic indicator in multiple sclerosis.

LP must not be performed in the presence of raised intracranial pressure which, if suspected, mandates prior CT scan.

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