Provided below are ELISA kits targeting cation channel sperm associated 1, a human protein encoded by CATSPER1. This protein is 780 amino acids long, with a mass of 90.1 kDa, and is a member of the Cation channel sperm-associated (TC 1.A.1.19) family. There is a noted implication in Spermatogenic failure 7. Other alias names for this protein include: cation channel sperm-associated protein 1, hCatSper, sperm-associated cation channel 1, and CATSPER.