Covance Inc. with headquarters in Princeton, New Jersey, is a contract research organization (CRO) providing drug development and animal testing services. According to its website, it is one of the largest companies of its kind in the world, with annual revenues of over $2 billion, and over 11,000 employees in more than 60 countries. It claims to provide the world's largest central laboratory network. It became a publicly traded company after being spun off by Corning Incorporated in 1996.