Identification and credential verification services provider ChoicePoint ( CPS) is acquiring ShortStop. ShortStop operates a network of drug and health testing clinics. Terms of the acquisition were not disclosed. The company said that the transaction is not expected to materially affect financial results of ChoicePoint and not be dilutive to earnings. "This expanded network will enable customers to deliver a better applicant experience by using collection facilities that are closer to their businesses as well as applicants' residences," ChoicePoint said. ShortStop operates with more than 10,000 collection sites nationwide.