Associated with this approach, are a number of related factors linked to accreditation that now must be considered by the food laboratory testing industry. These are the need for the laboratory to utilize consistent and traceable reference materials and demonstration of proficiency in the testing activities to be included on their Scope of Accreditation. In food microbiology this usually means the use of certified reference cultures and recognized proficiency testing providers. A brief overview of the accrediting process will set the stage for the speakers: 1) the background and quality control activities involved in being a reference material producer, 2) the role that proficiency testing programs and schemes provide in demonstrating that the laboratory can produce good, reliable data; 3) how the implementation of these requirements impacts in a multi-site contract testing laboratory; and 4) a perspective of FSMA's impact from a state testing laboratory.