label: Elevated CSF neurofilament light chain concentration
label_lc: elevated csf neurofilament light chain concentration
description: "Neurofilament light chain (NfL) is a neuronal cytoplasmic protein highly expressed in large caliber myelinated axons. Its levels increase in cerebrospinal fluid (CSF) and blood proportionally to the degree of axonal damage in a variety of neurological disorders, including inflammatory, neurodegenerative, traumatic and cerebrovascular diseases."