Medically reviewed by Jay N. Yepuri, MDMedically reviewed by Jay N. Yepuri, MD Gallbladder sludge, or biliary sludge, is a mixture of particles and bile that can build up in the gallbladder.

An abdominal ultrasound is an imaging test using sound waves that can used to view internal organs, including the gallbladder. A healthcare provider may order one if symptoms, such as abdominal ...