The Quantikine Human PlGF Immunoassay is a 3.5 or 4.5 hour solid phase ELISA designed to measure human PlGF in cell culture supernates, serum, plasma, and urine. The immunoassay kit contains E. coli-expressed recombinant human PlGF and antibodies raised against the recombinant factor. This immunoassay has been shown to quantitate recombinant human PlGF accurately. Results obtained using natural human PlGF showed dose 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 PlGF. Range: 15.60 - 1000 pg/mL. Sensitivity: 7 pg/mL. Time: 3.5 hours or 4.5 hours