Diagnosis

Tests and procedures used to diagnose cholecystitis include:

• Blood tests. Your doctor may order blood tests to look for signs of an infection or signs of gallbladder problems.
• Imaging tests that show your gallbladder. Abdominal ultrasound, endoscopic ultrasound, or a computerized tomography (CT) scan can be used to create pictures of your gallbladder that may reveal signs of cholecystitis or stones in the bile ducts and gallbladder.
• A scan that shows the movement of bile through your body. A hepatobiliary iminodiacetic acid (HIDA) scan tracks the production and flow of bile from your liver to your small intestine and shows blockage. A HIDA scan involves injecting a radioactive dye into your body, which attaches to bile-producing cells so that it can be seen as it travels with the bile through the bile ducts.