Medication Administration Risk in Post-Operative Patient

A nurse is preparing to administer intravenous (IV) acetaminophen (Ofirmev) to a post-operative patient experiencing moderate pain. The ordered dose is 1 gram, to be infused over 15 minutes. As the nurse reviews the patient's chart, she notes a recent serum liver enzyme test showing elevated levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST). Considering the implications of the laboratory values on medication administration, which action should the nurse take before administering this medication?