AUDIT MicroControls announces Control Vitamin D for Roche Systems, a new addition to the company’s line of calibration verification/linearity and daily quality control products. The Control LQ Vitamin D for Roche Systems, item# K080M-6, is an assayed, stable, ready-to-use liquid, bi-level reference control for use with assays designed to quantitate Vitamin D. This product has an open vial stability of 14 days when stored at 2°-8°C.