Head-to-head comparison of available commercial antibodies against Valosin-containing protein VCP by immunoblot (Western blot), immunoprecipitation and immunofluorescence. Work reported in this report was supported in part by the ALS-Reproducible Antibody Platform (ALS-RAP). ALS-RAP was created as a public-private partnership by three leading ALS charities: the ALS Association (USA), the Motor Neurone Disease Association (UK), and the ALS Society of Canada.