The Quantikine Mouse/Rat PDGF-AB Immunoassay is a 4.5 hour solid-phase ELISA designed to measure mouse/rat PDGF-AB in cell culture supernates, serum, and plasma. It contains E. coli-expressed recombinant rat PDGF-AB and antibodies raised against recombinant rat PDGF. This immunoassay has been shown to accurately quantitate the recombinant factor. Results obtained using natural mouse/rat PDGF-AB showed linear curves that were parallel to the standard curves obtained using the Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for naturally occurring mouse/rat PDGF-AB. Range: 7.80 - 500 pg/mL. Sensitivity: 3.8 pg/mL. Time: 4.5 hours