+A **lumbar puncture**, or spinal tap, is a medical procedure to collect [spinal fluid](/wiki/spinal_fluid) from the lower back. A thin needle is carefully inserted into the [spinal canal](/wiki/spinal_canal) to diagnose various conditions affecting the brain and spinal cord.
+## See also
+- [Cerebrospinal Fluid](/wiki/cerebrospinal_fluid)
+- [Spine](/wiki/spine)
+- [Neurology](/wiki/neurology)
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