Ready-to-use ELISA kits are available for the detection of sushi-repeat-containing protein, an alias of the protein, sushi repeat containing protein X-linked. The official gene symbol is SRPX. The protein has a mass of 51.6 kDa and length of 464 residues. It may be known by other names, including: SRPX1, HEL-S-83p, DRS, sushi-repeat-containing protein X chromosome, epididymis secretory sperm binding protein Li 83p, and sushi repeat-containing protein SRPX.