Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-29-123

(a) No person shall represent, or maintain an office or specimen collection station or other facilities for the representation of any medical laboratory situated in this state or any other state, that makes examinations in connection with the diagnosis and control of diseases, unless the medical laboratory is licensed in accordance with this chapter.

(b) The board may, from time to time, determine which tests may be performed on specimens shipped through the mails and may prescribe requirements for collection, transportation and preservation of such specimens.

(c) A medical laboratory located in another state, which provides services to patients in this state, shall be subject to § 68-29-129(7) and any other requirements deemed necessary by the board pursuant to this chapter to protect the health and safety of patients in this state.