; or (2) with respect to the analytical validity, clinical validity, or safety for individuals who come into contact with such an in vitro clinical test. (b) Exceptions Subsection (a) shall not be construed to affect the authority of a State, Tribal, or local government to do any of the following: (1) To license laboratory personnel, health care practitioners, or health care facilities or to regulate any aspect of a health care practitioner-patient relationship. (2) To enforce laws of general applicability, such as zoning laws, environmental laws, labor laws, and general business laws. (3) To authorize laboratories to develop and perform an in vitro clinical test, pursuant to a law enacted by a State prior to January 1, 2022, as long as such law does not impose requirements that are different from any requirement applicable to an in vitro clinical test under this Act. If a State has enacted such a law, the Secretary shall exempt such test for laboratories in that State from compliance with this subchapter. (c) Clarification Nothing in this section shall be construed to— (1) modify any action for damages or the liability of any person under the law of any State