A number of ELISA Kits are available that target prepronociceptin b, an alias of the protein, prepronociceptin. The human protein, encoded by the gene PNOC, is a member of the Opioid neuropeptide precursor family. The protein's cellular localization is indicated to be secreted. Additional synonyms or past names for this protein may include: N/OFQ, NOP, OFQ, PPNOC, ppN/OFQ. Homology is conserved in other species, such as Mouse, Rat, Zebrafish, Frog, Chicken.