Provided below are ELISA kits targeting neuroligin 4 X-linked, a human protein encoded by NLGN4X. This protein is 816 amino acids long, with a mass of 91.9 kDa, and is a member of the Type-B carboxylesterase/lipase family. 2 isoforms have been identified. This is reported to be a membrane protein. There is a noted implication in Autism, X-linked 2. Other alias names for this protein include: ASPGX2, AUTSX2, HLNX, and HNL4X.