Metabolon has appointed Michael Rasche as its president of international business. Rasche will lead the firm's international business activities with a focus on customer and team expansion. Prior to Metabolon, Rasche acted as chief commercial officer at Definiens. Before Definiens, Rasche served as corporate VP of global commercial operations at Ayoxxa. He has also held leadership positions at Dako (now Agilent), Roche, and Bayer Diagnostics in Europe, as well as North and South America.