There are a number of ELISA Kits available for the measurement of C3orf13, another term for the human protein, interleukin 1 receptor accessory protein. Other synonyms may include: IL-1 receptor accessory protein, interleukin-1 receptor 3, interleukin-1 receptor accessory protein beta, C3orf13, and interleukin-1 receptor 3. It is encoded by the IL1RAP gene to yield a protein 570 amino acids in length and 65.4 kDa in size. However, there are up to 4 reported isoforms. The protein is categorized into the Interleukin-1 receptor family. Versions of C3orf13 are present in other organisms, including: Mouse, Rat, Frog.