A number of ELISA Kits are available that target insulin-like growth factor binding protein 4, an alias of the protein, insulin like growth factor binding protein 4. The human protein is encoded by the gene IGFBP4. The protein's cellular localization is indicated to be secreted. Additional synonyms or past names for this protein may include: BP-4, HT29-IGFBP, IBP4, IGFBP-4. Homology is conserved in other species, such as Mouse, Rat, Frog, Chicken.