Abstract New multiplex, label-free methods for the sensitive and quantitative detection of serum proteins are highly desirable, as they have the potential to dramatically accelerate biomedical research in the age of multi-omic, big data driven personalized medicine. We have used Arrayed Imaging Reflectometry (AIR™), a label-free protein microarray technology that relies on the target binding-induced perturbation of an antireflective coating on the surface of a silicon chip, to create a multiplex antibody array for the detection of human serum cytokines and inflammatory markers. The chip is able to provide quantitative information about protein concentrations, with limits of detection in picograms per mL. Provided in a standard 96-well microplate format, the label-free nature of the array will permit rapid expansion in plex size and enable simple, flexible creation of custom panels as there are no secondary antibodies or labels to cross-react. Here we demonstrate validation parameters of sensitivity, precision, and accuracy for inflammatory markers (>20) in a new multiplex technology suitable for analyzing trends across cytokine and inflammatory marker profiles comparable to traditional ELISAs. With array capabilities from low to hundreds of plex combined with a hands-free, automation-friendly workflow enabled by the Ziva instrument, the technology has been designed for the ultimate user-experience.