Figure 1From: Evaluation of Epic® label-free technology to quantify functional recombinant hemagglutinin Steps in the Epic® assay for quantification of recombinant HA. Immobilization of fetuin; wash step and baseline read of refracted light wavelength; addition of HA and final read of refracted light wavelength. The response is measured as the difference in wavelength, measured in picometers (pm).Back to article page