![]() Curving the spine allows the doctor to find ample space to insert a thin spinal needle between the bones in the lower back (vertebrae). You will either be seated with your spine curled forward or lie on your side with your spine curved and your knees drawn up to your chest. If you think you will have trouble staying still, tell your doctor in advance. ![]() ![]() It’s very important to remain completely still to avoid incorrect needle placement or trauma to the spine. The most common method of collecting cerebrospinal fluid is a lumbar puncture, sometimes called a spinal tap.Ī lumbar puncture usually takes less than 30 minutes and is performed by a doctor specially trained to safely collect CSF.ĬSF is usually withdrawn from the lower back area. This is because CSF is in direct contact with the brain and spinal cord. Conditions of the central nervous system include meningitis, which causes inflammation of the brain and spinal cord, multiple sclerosis, hemorrhage around the brain, and cancer with brain involvement.Īlthough obtaining a spinal fluid sample is a bit painful, testing a CSF sample is one of the best ways to correctly diagnose specific conditions. These tests are helpful in diagnosing diseases and conditions of the central nervous system, which includes your brain and spinal cord. The body completely replaces CSF every few hours.ĬSF cell count and differential cell count are two components in a series of laboratory tests performed to analyze a person’s CSF. This fluid is continually replenished by the choroid plexus in the brain and absorbed into the bloodstream. It helps support the venous structures around the brain, and it’s important in brain homeostasis and metabolism. Cerebrospinal fluid (CSF) is a clear liquid that cushions and surrounds the brain and spinal cord.
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