Ready-to-use ELISA kits are available for the detection of p24, an alias of the protein, neurensin 1. The official gene symbol is NRSN1. The protein, with a mass of 21.5 kDa and length of 195 residues, is reported to be membrane-associated. It is a member of the VMP family and may be known by other names, including: p24, vesicular membrane protein p24, vesicular membrane protein of 24 kDa, vesicular membrain protein p24, and neuro-p24.