This latent form of PAI-1 is less than 0.4% active and is useful as a control for experiments when used in conjunction with the active form of PAI-1. OBR offers latent wild type PAI-1 from a variety of species.

PI02 PAI-1 (Human), Latent Wild Type
PI17 PAI-1 (Mouse), Latent Wild Type
PI20 PAI-1 (Rat), Latent Wild Type
PI24 PAI-1 (Rabbit), Latent Wild Type