Haematology Service | Waitematā | Te Whatu Ora

Lumbar Puncture

A lumbar puncture is a procedure to remove a small sample of cerebrospinal fluid (surrounds the spinal cord and brain) for analysis.  An injection of local anaesthetic is given, followed by the insertion of a thin needle into the spinal canal.  This is done to check for the presence of abnormal cells.  Sometimes an injection of a drug may be given at the same time (intrathecal chemotherapy). 

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