Final answer:
Hives is not a typical adverse reaction to oral contrast media used in CT scans.
Step-by-step explanation:
Oral contrast media, which is used in CT scans to enhance images of the gastrointestinal tract, can cause various adverse reactions. However, hives is NOT a typical adverse reaction to oral contrast media. Diarrhea, abdominal cramping, flatulence, vomiting, nausea, intestinal obstruction, anemia, and allergic reactions are potential adverse reactions to oral contrast media.