A lumbar puncture (LP), which is also called a spinal tap, is a common neurological test that's done to examine the cerebrospinal fluid (CSF)—the protective fluid that surrounds your brain and ...

a sample of your cerebrospinal fluid is retrieved. The most common way to attain a sample is through a lumbar puncture, also known as a spinal tap.‌ Spinal taps can be unnerving or uncomfortable ...

Since the CSF opening pressure was slightly elevated, a computed tomography scan was performed immediately after the spinal tap which revealed an inclusion of air within the fourth ventricle ...