This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Shelf life of blood with CPDA - \nSelect and explain. \nA. 2 weeks, B. 3 weeks, C. 5 weeks, D. 8 weeks', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 5 weeks o Once blood is removed from the donor, it stas a sequences of in vitro changes that change its physiological propeies. o Ensuring the blood and its products transfusion safe, their storage is a must. o The main aim is to minimize damage to store blood. o Addition of some additive solutions increases the bility of blood, paicularly RBCs: Additive Shelf life of RBC Acid-citrate-dextrose (ACD) 21 days Citrate phosphate dextrose (CPD) 21 days Citrate phosphate dextrose-adenine (CPD-A) 35 days Saline-adenine-Glucose-Mannitol (SAG-M) 42 days", 'role': 'assistant'}]