338.150.  Inspections by authorized representatives of board, where — testing program authorized — rulemaking authority. — 1.  Any person authorized by the board of pharmacy is hereby given the right of entry and inspection upon all open premises purporting or appearing to be drug or chemical stores, apothecary shops, pharmacies or places of business for exposing for sale, or the dispensing or selling of drugs, pharmaceuticals, medicines, chemicals or poisons or for the compounding of physicians' or veterinarians' prescriptions.

  2.  The board may establish and implement a program for testing drugs or drug products maintained, compounded, filled, or dispensed by licensees, registrants, or permit holders of the board.  The board shall pay all testing costs and shall reimburse the licensee, registrant, or permit holder for the reasonable, usual, and customary cost of the drug or drug product requested for testing.

  3.  The board shall promulgate rules to implement the provisions of this section.  Any rule or portion of a rule, as that term is defined in section 536.010, that is created under the authority delegated in this section shall become effective only if it complies with and is subject to all of the provisions of chapter 536 and, if applicable, section 536.028.  This section and chapter 536 are nonseverable and if any of the powers vested with the general assembly pursuant to chapter 536 to review, to delay the effective date, or to disapprove and annul a rule are subsequently held unconstitutional, then the grant of rulemaking authority and any rule proposed or adopted after August 28, 2013, shall be invalid and void.