Is there one best test to diagnose gallstones?

Have Gallstones? Stones in the gallbladder (gb) seldom cause symptoms unless they migrate into the neck of the gb (& block exit of bile) or into the common bile duct. Symptomless gallstones may be diagnosed by chance by imaging or during investigation for some other condition. Only 10% become symptomatic within 5 years of detection. Ultrasound, ct scan, mrcp finds stones; cck-hida scan can tell if gb is diseased.