The sensitive measurement of functionally active mouse PAI-1 is easily performed with this 96 well strip format ELISA kit. Functionally active PAI-1 present in plasma or culture media reacts with urokinase coated onto a micro titer plate. Latent or complexed PAI-1 will not bind to the plate and will not be detected. After appropriate washing steps, anti mouse PAI-1 primary antibody binds to the PAI-1