What's a Spinal Tap (Lumbar Puncture)? (Video)
en español: Breve resumen: Punción lumbar
Medically reviewed by: KidsHealth Medical Experts
What's a Spinal Tap (Lumbar Puncture)?
A lumbar puncture, or spinal tap, is a medical test that involves collecting a small sample of cerebrospinal fluid (CSF) for examination. This clear, colorless liquid helps "cushion" the brain and spinal cord, or central nervous system.
Doctors use the fluid sample to look for signs of possible infections or other illnesses.
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Lumbar Puncture
Medically reviewed by: KidsHealth Medical Experts
Date reviewed: January 2022