The kit is a sandwich enzyme immunoassay for in vitro quantitative measurement of Abeta42 in Rat serum, plasma and other biological fluids This ELISA kit uses Sandwich-ELISA as the method. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Rat Abeta42. Standards or samples are added to the appropriate micro ELISA plate wells and bound by the specific antibody. Then a biotinylated detection antibody specific for Rat Abeta42 and Avidin-Horseradish Peroxidas