The Quantikine Mouse IL-3 Immunoassay is a 4.5 hour solid phase ELISA designed to measure mouse IL-3 in cell culture supernates and mouse serum. It contains E. coli-expressed recombinant mouse IL-3 and antibodies raised against recombinant mouse IL-3. This Immunoassay has been shown to accurately quantitate the recombinant factor. Results obtained using natural mouse IL-3 showed dose 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 IL-3. Range: 7.80 - 500 pg/mL. Sensitivity: 2.5 pg/mL. Time: 4.5 hours