Provided below are ELISA kits targeting activity dependent neuroprotector homeobox, a human protein encoded by ADNP. This protein is 1102 amino acids long with a reported mass of 123.6 kDa. This is reported to be a nuclear protein. There is a noted implication in Helsmoortel-van der Aa syndrome. Other alias names for this protein include: activity-dependent neuroprotector homeobox protein, ADNP homeobox 1, activity-dependent neuroprotective protein, activity-dependent neuroprotector, HVDAS, and MRD28.