The Quantikine Human BDNF Immunoassay is a 3.5 hour solid phase ELISA designed to measure human BDNF in cell culture supernates, serum, and plasma. It contains recombinant human BDNF expressed in Sf 21 cells and antibodies raised against the recombinant factor. This immunoassay has been shown to quantitate the recombinant BDNF accurately. Results obtained measuring natural human BDNF showed dose-response curves that were parallel to the standard curves obtained using the recombinant Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for natural human BDNF. Range: 62.50 - 4000 pg/mL. Sensitivity: 20 pg/mL. Time: 3.5 hours