On Assignment Inc. (NASD: ASGN), rebranded its U.S. clinical research division under the name Valesta Clinical Research Solutions. The change was made to promote the company’s global presence in clinical research and its range of services offerings, which include contract and direct hire placements, as well as functional outsourcing for clinical trials. It also leverages the Valesta brand’s strength in Western Europe.

On Assignment is based in Calabasas, Calif. It provides life sciences, healthcare, information technology and engineering staffing.