An LP test, or lumbar puncture (also called a spinal tap), is a procedure used as part of the MS diagnostic process. A thin needle is carefully inserted into the lower back to collect a small sample of cerebrospinal fluid (CSF) — the colorless fluid that surrounds and cushions the brain and spinal cord. The fluid is then Show Full Answer
An LP test, or lumbar puncture (also called a spinal tap), is a procedure used as part of the MS diagnostic process. A thin needle is carefully inserted into the lower back to collect a small sample of cerebrospinal fluid (CSF) — the colorless fluid that surrounds and cushions the brain and spinal cord. The fluid is then sent to a lab and analyzed for signs that may point to MS, including:
- Higher-than-normal protein levels (linked to nerve damage)
- Signs of immune system activity in the central nervous system
- Oligoclonal bands, which are antibodies that appear when inflammation is present
During the procedure, you'll typically lie on your side with your knees pulled up to your chest. The lower back is cleaned and numbed, and a small amount of fluid is drawn out before the site is bandaged. Some people feel mild discomfort during the procedure, and some experience headaches or backaches afterward. It's worth knowing that a lumbar puncture is a helpful tool in diagnosing MS, but it isn't always required — your neurologist will determine if it's needed based on your specific situation.
September 7
Join
Your Privacy Choices
