Serum neurofilament and measures of lower motor neuron dysfunction in amyotrophic lateral sclerosis.
OBJECTIVE Serum neurofilament light chain (NfL) is an emerging diagnostic and prognostic biomarker in amyotrophic lateral sclerosis (ALS). Ulnar far-field potentials (FFP) have also been proposed as a reliable neurophysiological biomarker in ALS. This study examined the relationship between serum NfL levels and neuroph...