Cerebrospinal fluid as a diagnostic tool has widened its reach in clinical practice due to recent advances in liquid biopsy technology and molecular diagnostic techniques. Nowadays, the widespread use of molecular biology in clinical practice shapes our decision-making processes and prognostic course at the bedside. In this book, we cover recent advances in cerebrospinal fluid analysis options and how these changes have shaped and will change our daily clinical practice. Future technology is coming rapidly, and these changes are helping humanity to be more precise and rapid in treating cerebrospinal fluid-related pathologies. I hope you will find some of your answers in this book about recent advances in cerebrospinal fluid as a diagnostic and prognostic tool.