Mo. Rev. Stat. § 488.5334

Upon a plea of guilty or a finding of guilty for an offense of violating the provisions of section 577.010 or 577.012 or violations of county or municipal ordinances involving alcohol or drug-related traffic offenses, the court may, in addition to imposition of any penalties provided by law, order the convicted person to reimburse the state or local law enforcement agency which made the arrest for the costs associated with such arrest. Such costs shall include the reasonable cost of making the arrest, including the cost of any chemical test made under chapter 577, to determine the alcohol or drug content of the person's blood, and the costs of processing, charging, booking and holding such person in custody. The state and each local law enforcement agency may establish a schedule of such costs; however, the court may order the costs reduced if it determines that the costs are excessive.