Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-11-1203

(1) The price quote of the group purchasing program is competitive and represents the lowest and best bid for the goods or services sought to be purchased under the competitive bidding process;

(2) The group purchasing program certifies to the governing board of the public body that it uses equivalent competitive procedures to obtain quotes or contracts for goods or services sought to be purchased by the public body, so as to obtain the lowest and best bid available to the group purchasing program for the goods or services to be made available for purchase by the public body or other participants in the group purchasing program; and

(3) The governing board of the public body has determined that participation in the group purchasing program is in the best interest of the public, such determination to be made at a meeting of the governing board of the public body no less frequently than annually upon a submission of a summary report by management of the public body showing the purchases made through one (1) or more group purchasing programs over a specific period of time covered by the summary report.