Is it urgent to have hida scan when have gallstones, probable blockage or mass, severe abdominal pain with abdomen fluid, no appetite/vomiting,nausea ?

Gall stones: For gall stone and blockage HIDA scan probably not going to contribute much, Your physician is suspecting something else. If you are suffering with it have it done ASAP if not right away.

Sounds urgent to me!: If you have severe abdominal pain with abdominal fluid, nausea, vomiting and no appetite, I hope that you are in the hospital. A HIDA scan (Cholescintigraphy, hepatobiliary scintigraphy) is used to evaluate problems with your gallbladder, and evaluate the bile-excreting function of your liver, and to track the flow of bile from your liver. The HIDA scan can help determine the best treatment.

Urgency up to doctor: Hida scan tells us how well to gallbladder is functioning not structural abnormalities. As to urgency, that question would best be answered by your physician!

Yes: The wording here leaves to question if the gall bladder is surgically absent, so the answer is the same: Unless this presentation has been worked up, it is urgent to have a HIDA (cholescintigraphy) to rule out acalculous gallbladder disease, high-grade and partial biliary obstruction, or even postcholecystectomy pain syndrome, like sphincter-of-Oddi dysfunction & biliary atresia. Urgent=today.