A lumbar puncture (spinal tap) is a common test doctors use to check for signs of MS in your spinal fluid. But a lumbar puncture on its own isn’t enough to confirm an MS diagnosis. Diagnosing ...

A lumbar puncture is used to take a sample of the cerebrospinal fluid from the lower back. This fluid flows around the spinal cord and the brain, and clears waste products. Levels of certain proteins ...