Human Clusterin Calibrator is lyophilized. It is intended for use as an assay calibrator for MSD U-PLEX human assays that measure clusterin. The utility of this product has not been evaluated in other applications. The concentration of clusterin is provided in the lot-specific certificate of analysis. Human Clusterin was expressed in a mouse cell line. Instructions on using Human Clusterin Calibrator are provided in U-PLEX Biomarker Group 3 Human Product Inserts.