There are a number of ELISA Kits available for the measurement of LAIR-1, another term for the human protein, leukocyte associated immunoglobulin like receptor 1. Other synonyms may include: immunoglobulin heavy chain variable region, leukocyte-associated Ig-like receptor 1, CD305, and LAIR-1. It is encoded by the LAIR1 gene to yield a protein 287 amino acids in length and 31.4 kDa in size. However, there are up to 4 reported isoforms.