Provided below are ELISA kits targeting family with sequence similarity 50 member B, a human protein encoded by FAM50B. This protein is 325 amino acids long, with a mass of 38.7 kDa, and is a member of the FAM50 family. Other alias names for this protein include: protein FAM50B, XAP5 like, XAP5-like protein, and D6S2654E.