No delayed imaging or CCK administration is needed in most cases when bowel excretion does not occur but gallbladder fills promptly.

When a HIDA scan shows p-GB-no-SB, the probability of identifying clinically relevant CBD obstruction by additional imaging with CCK or DI is virtually zero in an acute clinical setting if clearance of liver parenchymal activity is prompt. Additional imaging with CCK or DI can be reserved for only those showing abnormal clearance of liver parenchymal activity.