Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-32-103

(a) The department of health shall promulgate rules and regulations in accordance with the Uniform Administrative Procedures Act, compiled in title 4, chapter 5, to provide that any individual who is treated by a health professional or health facility has the option of designating donors to provide blood or blood products to the individual that may be necessary for such individual's treatment.

(b) The regulations promulgated pursuant to this section do not apply in those emergency situations where the attending physician determines that failure to transfuse will be life threatening to the patient.