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 ...

As prevention trials for Alzheimer’s disease ramp up, researchers need fast and cheap ways to diagnose early, and to screen cognitively normal people. PET is expensive. Cerebrospinal fluid (CSF) ...