This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
Tc labeled RBCs are used for all except 
Select and explain. 
A. LV function, B. GI bleeding, C. Liver adenoma, D. Liver hemangioma
B: GI bleeding
Answer: B: GI bleeding 
Explanation: Tc-99m labellee rbc is used in assessment of GI bleeding .