Ready-to-use ELISA kits are available for the detection of NETS, an alias of the protein, serine peptidase inhibitor, Kazal type 5. The official gene symbol is SPINK5. The protein, with a mass of 120.7 kDa and length of 1064 residues, is reported to be secreted. It may be known by other names, including: NS, NETS, LEKTI, lymphoepithelial Kazal-type-related inhibitor, lympho-epithelial Kazal-type-related inhibitor, and serine protease inhibitor Kazal-type 5.