Clinical Laboratory Improvement Amendments (CLIA) of 1988. All laboratory testing sites providing services under this Agreement have either a Clinical Laboratory Improvement Amendments (CLIA) certificate of waiver or a certificate of registration along with a CLIA identification number. Those laboratories with certificates of waiver will provide only the types of tests permitted under the terms of their waiver. Laboratories with certificates of registration may perform a full range of laboratory tests. Contractor shall require all subcontractors and participating providers to conform to this requirement.