A HIDA Scan is a nuclear medicine test used to check how well your liver, gallbladder and bile ducts are working. It involves the injection of a safe radioactive tracer (usually 99m-Tc labeled Mebrofenin) that travels through your liver into the bile ducts and gallbladder, just like natural bile.

It helps your doctor identify blockages, inflammation, or poor function of the gallbladder, especially if you’re having upper abdominal pain, nausea, or digestive issues.