Abstract
Neurofilament light chain is a component of the axonal cytoskeleton. The concentration of the neurofilament light chain in cerebrospinal fluid may reflect axonal damage or the extent of white matter damage. In this study we describe a sensitive immunoassay for the detection of neurofilament light chain in cerebrospinal fluid using commercially available materials. The detection limit of the assay was 5 ng/l and the assay was linear up to 390 ng/l. Mean recovery was 91.5% and inter-assay and intra-assay coefficients of variation were below 18%. Strongly increased levels of neurofilament light chain were observed in patients with cerebrovascular accidents, subarachnoid hemorrhage and severe traumatic brain injury, suggesting the occurrence of axonal damage in these conditions.
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