Ready-to-use ELISA kits are available for the detection of C1orf91, an alias of the protein, transmembrane protein 234. The official gene symbol is TMEM234. The protein, with a mass of 17.6 kDa and length of 164 residues, is reported to be membrane-associated. It is a member of the TMEM234 family and may be known by other names, including: RP4-622L5, PRO1105, C1orf91, and AASL548.