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HireRight Buys National Diagnostics

Irvine-based HireRight, a provider of online, employment background and drug screening services, said Monday that it has acquired a provider of drug testing and physical exam services, National Diagnostics. Financial terms of the acquisition were not disclosed. HireRight provides background screening and related services via web-based software, and is a unit of Altegrity. National Diagnostics is based in Charlotte, North Carolina.