The Quantikine Human ErbB2/Her2 Immunoassay is a 4.5 hour solid-phase ELISA designed to measure human ErbB2 in cell culture supernates, cell lysates, serum, plasma, urine, and human milk. It contains NS0-expressed recombinant human ErbB2 and has been shown to accurately quantitate the recombinant factor. Results obtained using natural human ErbB2 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 human ErbB2. Range: 78.10 - 5000 pg/mL. Sensitivity: 14.8 pg/mL. Time: 4.5 hours