Cerebrospinal fluid (CSF) is a clear bodily fluid that cushions and protects your brain and spinal cord. A CSF protein test involves taking a fluid sample from your spinal column using a needle. This ...
A lumbar puncture is sometimes called a “spinal tap.” It’s a medical procedure that can involve collecting a sample of cerebrospinal fluid (CSF). CSF is the fluid that surrounds your spinal cord and ...