Patient Preparation for a HIDA Scan

Before performing this type of hepatobiliary scan, what patient preparation is required to ensure a diagnostic study?

1. AThe patient should eat a full meal 30 minutes prior to the study to stimulate bile flow and maximize gallbladder contraction before tracer injection
2. BNo preparation is required; the patient may eat and drink normally up to and including the time of the radiopharmaceutical injection
3. CThe patient should fast for 2–4 hours before the study, as recent food intake causes gallbladder contraction and may prevent normal gallbladder filling during imaging
4. DThe patient must fast for a minimum of 24 hours and receive a laxative the evening before to ensure complete bowel clearance prior to injection