Verichem Laboratories offers an series of ready-to-use, liquid stable clinical reference materials for total cholesterol, high density lipoprotein (HDL), and low density lipoprotein (LDL) testing. Intended for calibration and calibration verification procedures, the Matrix Plus Total Cholesterol Reference Kit, the Matrix Plus Total Cholesterol Reference – Level F, and the HDL Cholesterol Verifier Kit support laboratory QA and QC efforts. The product design provides materials that are intended to be treated as human specimens and feature universal compatibility with a variety of automated chemistry clinical systems. All of the clinical reference materials for Total Cholesterol, HDL, and LDL are protein-based and incorporate a proprietary stabilization process, free of azides, glycols, or surfactants. The serum-like formulation also contains a critical blend of highly purified human source material and bovine biologicals in saline.