Canine Immunoglobulin G,IgG ELISA Kit is designed and made by Cusabio for detectingImmunoglobulin G4(IgG4). For more product information, please check the following link: http://www.cusabio.com/product/ELISA_Kit/Canine_Immunoglobulin_G,IgG_ELISA_Kit-115109.html.