TARRYTOWN, N.Y.--(BUSINESS WIRE)--Siemens Medical Solutions Diagnostics, www.usa.siemens.com/medical, announced today that it has been selected by Premier Inc., www.premierinc.com, the nation’s largest Group Purchasing Organization (GPO), to provide a complete line of immunoassay, chemistry, automation and urinalysis solutions. The agreement is part of Premier’s recently issued “Core Lab” segment which sought solution providers in six separate bid categories. Siemens has been selected to provide the Integrated and Urinalysis solutions.