The UmanDiagnostics NF-light® assay is an enzymatic two site immunoassay for quantitative determinations of NF-light in human body fluids. The assay is for research use only and has been shown to cross react with mouse, rat, bovine and goat neurofilament light chains. Following injuries to nerve cells due to direct trauma or slow neurodegenerative processes the content of the cell is released into the surrounding compartment. Quantification of these proteins gives the possibility to follow disease progress and treatment efficacy.